High pressure oxygen furnace

Claim 2

A high temperature, high pressure gas furnace comprising in combination: a metallic bar fabricated from an alloy having a metallic creep responsive to high temperature stress, said alloy includes at least 45% nickel, 15% chromium, and 10% tungsten; said bar defining a vessel having walls, said vessel extending from one end of said bar at least partially to the other end of said bar to form an aperture within said bar; said walls being sufficiently thick to permit creep stress redistribution through said bar; an oven for receiving said bar; a first portion of said bar being inserted into said oven with a second portion of said bar protruding from said oven; means for supplying high pressure gas to said vessel form said second portion of said bar whereby a sample placed within said first portion of said bar can be treated at high temperatures and pressures.

Claim 3

The invention of claim 1 wherein said composition further includes not more than 2% molybdenum.

Claim 4

A high temperature, high pressure gas furnace comprising in combination: a metallic bar fabricated from an alloy having a metallic creep responsive to high temperature stress; said bar defining a vessel having walls, said vessel extending from one end of said bar at least partially to the other end of said bar to form an aperture within said bar; said walls being sufficiently thick to permit creep stress redistribution through said bar; an oven for receiving said bar; a first portion of said bar being inserted into said oven with a second portion of said bar protruding from said oven; means for supplying high pressure gas to said vessel from said second portion of said bar whereby a sample placed within said first portion of said bar can be treated at high temperatures and pressures; and a cylinder of fused quartz, said cylinder surrounding said bar as disposed within said oven, said cylinder given a dimension to permit thermal expansion and creep to a predetermined limit and to crack responsive to said thermal expansion and creep when said bar within said oven expands beyond a predetermined limit of creep.

Claim 5

A high temperature, high pressure gas furnace comprising in combination: a metallic bar fabricated from an alloy having a metallic creep responsive to high temperature stress; said bar defining a vessel having walls, said vessel extending from one end of said bar at least partially to the other end of said bar to form an aperture within said bar; said walls being sufficiently thick to permit creep stress redistribution through said bar; an oven for receiving said bar; a first portion of said bar being inserted into said oven with a second portion of said bar protruding from said oven; means for supplying high pressure gas to said vessel from said second portion of said bar whereby a sample placed within said first portion of said bar can be treated at high temperatures and pressures; and a cylinder of fused quartz, said cylinder surrounding said bar as disposed within said oven, said cylinder given a dimension to permit thermal expansion and creep to a predetermined limit and to crack responsive to said thermal expansion and creep when said bar within said oven expands beyond a predetermined limit of creep.

Claim 6

A high temperature, high pressure gas furnace comprising in combination: a metallic bar fabricated from an alloy having a metallic creep responsive to high temperature stress; said bar defining a vessel having walls, said vessel extending from one end of said bar at least partially to the other end of said bar to form an aperture within said bar; said walls being sufficiently thick to permit creep stress redistribution through said bar; an oven for receiving said bar; a first portion of said bar being inserted into said oven with a second portion of said bar protruding from said oven; means for supplying high pressure gas to said vessel from said second portion of said bar whereby a sample placed within said first portion of said bar can be treated at high temperatures and pressures; and a fused quartz tube disposed within said vessel for inserting a sample within a distal end of said vessel.

Claim 7

A high temperature, high pressure gas furnace comprising in combination: a metallic bar fabricated from an alloy having a metallic creep responsive to high temperature stress; said bar defining a vessel having walls, said vessel extending from one end of said bar at least partially to the other end of said bar to form an aperture within said bar; said walls being sufficiently thick to permit creep stress redistribution through said bar; an oven for receiving said bar; a first portion of said bar being inserted into said oven with a second portion of said bar protruding from said oven; means for supplying high pressure gas to said vessel from said second portion of said bar whereby a sample placed within said first portion of said bar can be treated at high temperatures and pressures; and a fused quartz tube disposed within said vessel for inserting a sample within a distal end of said vessel.

Claim 8

In a high temperature, high pressure gas furnace having a predetermined length wherein said furnace has a pressure chamber disposed therein the improvement to said pressure chamber comprising: a metallic bar fabricated from an alloy having metallic creep responsive to high temperature stress, said alloy including at least 45% nickel, at least 15% chromium, and at least 10% tungsten; said bar having an aperture defining a vessel extending from one end of said bar at least partially to the other end of said bar; a first portion of said bar inserted interiorly of said furnace with a second portion of said bar protruding from said furnace; said bar having sufficient length to permit temperatures in the range of 1000° C. within the first portion of said bar with the second portion of said bar remaining approximately at room temperatures; means connected to the second portion of said bar for admitting high pressure gas; and, means for opening and closing the vessel to permit insertion and withdrawal of a sample.

Claim 9

In a high temperature, high pressure gas furnace having a predetermined length wherein said furnace has a pressure chamber disposed therein the improvement to said pressure chamber comprising: a metallic bar fabricated from an alloy having metallic creep responsive to high temperature stress, said alloy including at least 45% nickel, at least 15% chromium, and at least 10% tungsten; said bar having an aperture defining a vessel extending from one end of said bar at least partially to the other end of said bar; a first portion of said bar inserted interiorly of said furnace with a second portion of said bar protruding from said furnace; said bar having sufficient length to permit temperatures in the range of 1000° C. within the first portion of said bar with the second portion of said bar remaining approximately at room temperatures; means connected to the second portion of said bar for admitting high pressure gas; and, means for opening and closing the vessel to permit insertion and withdrawal of a sample.

Claim 10

In a high temperature, high pressure gas furnace having a predetermined length wherein a furnace has a pressure chamber disposed therein the improvement to said pressure chamber comprising: a metallic bar fabricated from an alloy having metallic creep responsive to high temperature stress; said bar having an aperture defining a vessel extending from one end of said bar at least partially to the other end of said bar; a first portion of said bar inserted interiorly of said furnace with a second portion of said bar protruding from said furnace; said bar having sufficient length to permit temperatures in the range of 1000° C. within the first portion of said bar with the second portion of said bar remaining approximately at room temperatures; means connected to the second portion of said bar for admitting high pressure gas; and, means for opening and closing the vessel to permit insertion and withdrawal of a sample; and a quartz cylinder surrounding said bar, said quartz cylinder given a dimension to permit thermal expansion and creep of said bar responsive to high pressure, high temperature gas within said bar, said quartz cylinder given a dimension of interference with respect to said bar to crack when said bar expands beyond a selected dimension to indicate an end of service life of said bar.

Claim 11

In a high temperature, high pressure gas furnace having a predetermined length wherein a furnace has a pressure chamber disposed therein the improvement to said pressure chamber comprising: a metallic bar fabricated from an alloy having metallic creep responsive to high temperature stress; said bar having an aperture defining a vessel extending from one end of said bar at least partially to the other end of said bar; a first portion of said bar inserted interiorly of said furnace with a second portion of said bar protruding from said furnace; said bar having sufficient length to permit temperatures in the range of 1000° C. within the first portion of said bar with the second portion of said bar remaining approximately at room temperatures; means connected to the second portion of said bar for admitting high pressure gas; and, means for opening and closing the vessel to permit insertion and withdrawal of a sample; and a quartz cylinder surrounding said bar, said quartz cylinder given a dimension to permit thermal expansion and creep of said bar responsive to high pressure, high temperature gas within said bar, said quartz cylinder given a dimension of interference with respect to said bar to crack when said bar expands beyond a selected dimension to indicate an end of service life of said bar.

Claim 12

In a high temperature, high pressure gas furnace having a predetermined length wherein a furnace has a pressure chamber disposed therein the improvement to said pressure chamber comprising: a metallic bar fabricated from an alloy having metallic creep responsive to high temperature stress; said bar having an aperture defining a vessel extending from one end of said bar at least partially to the other end of said bar; a first portion of said bar inserted interiorly of said furnace with a second portion of said bar protruding from said furnace; said bar having sufficient length to permit temperatures in the range of 1000° C. within the first portion of said bar with the second portion of said bar remaining approximately at room temperatures; means connected to the second portion of said bar for admitting high pressure gas; and, an internal quartz cylinder, said internal quartz cylinder extending the length of said bar to permit insertion and withdrawal of a sample within said vessel.

Claim 13

In a high temperature, high pressure gas furnace having a predetermined length wherein a furnace has a pressure chamber disposed therein the improvement to said pressure chamber comprising: a metallic bar fabricated from an alloy having metallic creep responsive to high temperature stress; said bar having an aperture defining a vessel extending from one end of said bar at least partially to the other end of said bar; a first portion of said bar inserted interiorly of said furnace with a second portion of said bar protruding from said furnace; said bar having sufficient length to permit temperatures in the range of 1000° C. within the first portion of said bar with the second portion of said bar remaining approximately at room temperatures; means connected to the second portion of said bar for admitting high pressure gas; and, an internal quartz cylinder, said internal quartz cylinder extending the length of said bar to permit insertion and withdrawal of a sample within said vessel.

Claim 14

A process of high temperature, high pressure gas treatment including the steps of providing a metallic bar forming a vessel, said bar having metallic creep responsive to high temperature stress; providing a furnace; inserting a first portion of said bar partially into said furnace with a second portion of said bar protruding from said furnace; said bar having sufficient length to permit said first portion of said bar to be heated to temperatures in the range of 1000° C. while said second portion of said bar is substantially at room temperature; inserting a sample into said vessel; closing said aperture at said second portion of said bar; and supplying high pressure gas to said vessel simultaneously with heating said furnace to a temperature of up to a 1000° C. whereby said sample may be heated for heat treatment.

Claim 15

A process of high temperature, high pressure gas treatment including the steps of providing a metallic bar forming a vessel, said bar having metallic creep responsive to high temperature stress; providing a furnace; inserting a first portion of said bar partially into said furnace with a second portion of said bar protruding from said furnace; said bar having sufficient length to permit said first portion of said bar to be heated to temperatures in the range of 1000° C. while said second portion of said bar is substantially at room temperature; inserting a sample into said vessel; closing said aperture at said second portion of said bar; and supplying high pressure gas to said vessel simultaneously with heating said furnace to a temperature of up to a 1000° C. whereby said sample may be heated for heat treatment.

Claim 16

The process of claim 8 and including the step of surrounding said bar with a quartz cylinder, said quartz cylinder dimensioned to permit thermal expansion and creep of said bar up to a predetermined limit and for indicating expansion of said bar beyond said predetermined limit by telltale cracking.

Claim 17

The process of claim 8 and wherein said inserting said sample to said bar includes the step of providing a quartz tube for insertion into said vessel; placing said sample at the end of said tube; and inserting said tube into said vessel to place said sample within said vessel.