本文選題：超音速火焰噴涂 + WC-CoCr涂層��； 參考：《表面技術(shù)》2017年03期

【摘要】：目的研究WC-10Co4Cr涂層的耐滑動(dòng)磨損性能及機(jī)理。方法在0Cr13Ni5Mo不銹鋼基體上,采用超音速火焰噴涂(HVOF)制備了WC-10Co4Cr金屬陶瓷涂層。分析了WC-10Co4Cr涂層的物相組成、顯微組織,并測(cè)試了其硬度、結(jié)合強(qiáng)度、孔隙率及在560 r/min和1120 r/min轉(zhuǎn)速下的滑動(dòng)磨損性能。結(jié)果涂層的顯微硬度為1325HV0.2,結(jié)合強(qiáng)度為72 MPa。涂層組織致密,孔隙率為0.76%。在560 r/min下磨損10h,涂層與基體的磨損失重比為1:138.36;在1120 r/min下磨損10 h,涂層與基體的磨損失重比為1:127.44。結(jié)論在滑動(dòng)摩擦磨損的初期,涂層的磨損失效機(jī)制主要表現(xiàn)為磨粒磨損。隨著滑動(dòng)速度的增大,涂層的磨損失效機(jī)制主要表現(xiàn)為疲勞磨損。
[Abstract]:Objective to study the sliding wear resistance and mechanism of WC-10Co4Cr coating. Methods WC-10Co4Cr cermet coatings were prepared on 0Cr13Ni5Mo stainless steel substrate by supersonic flame spraying (HVOF). The phase composition, microstructure, hardness, bonding strength, porosity and sliding wear properties of WC-10Co4Cr coatings at 560 r/min and 1120 r/min rotational speeds were analyzed. Results the microhardness of the coating was 1325 HV0.2 and the bonding strength was 72 MPA. The microstructure of the coating is compact and the porosity is 0.76. The wear weight loss ratio of coating to substrate was 1: 138.36 at 560 r/min for 10 h and 1: 127.44 at 1120 r/min for 10 h. Conclusion in the initial stage of sliding wear, the wear failure mechanism of the coating is mainly abrasive wear. With the increase of sliding speed, the wear failure mechanism of the coating is mainly fatigue wear.
【作者單位】： 水利部產(chǎn)品質(zhì)量標(biāo)準(zhǔn)研究所;水利機(jī)械及其再制造技術(shù)浙江省工程實(shí)驗(yàn)室;浙江省水利水電裝備表面工程技術(shù)研究重點(diǎn)實(shí)驗(yàn)室;
【基金】：浙江省科技計(jì)劃項(xiàng)目(2014C31156) 浙江省科學(xué)計(jì)劃項(xiàng)目(2013C31044)~~
【分類號(hào)】：TG174.4
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本文編號(hào)：1837057