Research Progress in Welding of TZM Alloy and Graphite

GUO Peng; MA Jia; BAO Li; HU Suxin; WANG Luyi

doi:10.7512/j.issn.1001-2303.2023.04.08

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Research Progress in Welding of TZM Alloy and Graphite
Vol. 53, Issue 4, Pages: 73-80(2023)
DOI： 10.7512/j.issn.1001-2303.2023.04.08

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郭鹏，马佳，鲍丽，等.钼及钼合金与石墨焊接研究进展［J］.电焊机，2023，53（4）：73-80.

GUO Peng, MA Jia, BAO Li, et al.Research Progress in Welding of TZM Alloy and Graphite[J].Electric Welding Machine, 2023, 53(4): 73-80.
郭鹏，马佳，鲍丽，等.钼及钼合金与石墨焊接研究进展［J］.电焊机，2023，53（4）：73-80. DOI： 10.7512/j.issn.1001-2303.2023.04.08.

GUO Peng, MA Jia, BAO Li, et al.Research Progress in Welding of TZM Alloy and Graphite[J].Electric Welding Machine, 2023, 53(4): 73-80. DOI： 10.7512/j.issn.1001-2303.2023.04.08.

摘要

钼及钼合金具有优异的高温性能、优良的散热能力和较低的热膨胀系数，石墨具有与钼合金接近的热膨胀系数，并且具有极高的高温比热和散热能力，但其强度较低。二者结合可满足高温强度和散热需求，其高可靠连接是实现应用的基础，为此，从钼、石墨的物理和化学性质出发，分析了其焊接特性，回顾并总结了钼及钼合金与石墨的焊接方法、连接界面组织演变和接头性能变化规律的相关研究成果，并对钼及钼合金与石墨连接技术进行了展望。

Abstract

Molybdenum and its alloys have excellent high temperature performance, heat dissipation capacity and low thermal expansion coefficient. Graphite has a thermal expansion coefficient close to that of molybdenum alloy. In addition, graphite has very high specific heat capacity and heat dissipation capacity, but with very low strength. Generally, the combination of molybdenum alloy and graphite can meet the requirements of high temperature strength and high heat dissipation capacity. The reliable connection of molybdenum alloy with graphite is the basis of application. Based on the physical and chemical properties of molybdenum and graphite, the welding characteristics are analyzed. Besides, the welding methods, microstructures evolution of welding interface, and mechanical properties of TZM and graphite are reviewed. And the joint technology of molybdenum alloy and graphite is prospected.

关键词

钼及钼合金石墨钎焊扩散焊

Keywords

molybdenum alloygraphitebrazingdiffusion welding

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