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A Novel Surface Treatment Technique for Titanium Alloys
JOM ( IF 2.6 ) Pub Date : 2020-09-30 , DOI: 10.1007/s11837-020-04393-0
Ming-Xing Zhang , Shou-Mou Miao , Yi-Nong Shi

A novel packed-powder diffusion coating (PPDC) technique for pure Ti and Ti alloys was developed to improve their oxidization resistance and wear resistance. The treatment led to the formation of a controllable Al3Ti intermetallic-based composite coating, of which the thickness varied from 100 µm to 1295 µm depending on the treatment temperature and time. Cyclic oxidization tests in a static air within the temperature range from 800°C to 1000°C for 24 cycles indicated that the PPDC treatment significantly increased the oxidization resistance of Ti alloys, which enabled this type of light alloy to be comparable with some Ni-based superalloys. Furthermore, the PPDC-treated Ti alloys also showed a reduced friction coefficient and increased wear resistance compared with the substrates. Hence, it is reasonable to consider that, after the PPDC treatment, the lightweight Ti alloys had strong potential to partially replace Ni-based superalloys for high-temperature applications.

中文翻译:

一种新型钛合金表面处理技术

开发了一种用于纯钛和钛合金的新型填充粉末扩散涂层 (PPDC) 技术,以提高其抗氧化性和耐磨性。该处理导致形成可控的 Al3Ti 金属间复合涂层,其厚度从 100 µm 到 1295 µm 不等,具体取决于处理温度和时间。在800℃~1000℃的静态空气中循环氧化24次循环试验表明,PPDC处理显着提高了Ti合金的抗氧化性,使该类轻合金与一些Ni-基高温合金。此外,与基体相比,经 PPDC 处理的钛合金还表现出降低的摩擦系数和提高的耐磨性。因此,有理由认为,在 PPDC 处理后,
更新日期:2020-09-30
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