本文選題：等離子表面合金化 + 馬氏體不銹鋼�。� 參考：《材料科學與工藝》2015年02期

【摘要】：為提高馬氏體不銹鋼的耐蝕和耐磨性能,選擇40Cr13不銹鋼為基材、純鈮板為靶材,采用雙輝等離子表面冶金技術在不銹鋼表面制備合金化層.用SEM、GDOES、XRD等方法分析滲鈮溫度對鈮合金層組織、成分、相組成、表面形貌及硬度的影響,并對滲層形成機制及表面硬化機理進行了研究.結果表明:在900~1 000℃形成的鈮合金層組織均勻致密,合金層主要由Nb2C、Nb C、Fe2Nb、Cr2Nb及鈮組成;合金層表面粗糙度隨滲鈮溫度的提高而增加;合金層厚度隨滲鈮溫度改變發(fā)生不同變化規(guī)律,950℃滲鈮形成的滲層約13μm,900和1 000℃滲鈮后合金層厚度均為7μm左右;不同溫度滲鈮后試樣的表面硬度與基體相比均有較大幅度的提高,1 000℃滲鈮后試樣表面硬度高達約985 HV0.025,900℃滲鈮后約758 HV0.025,而950℃滲鈮后表面硬度最低,約698 HV0.025.
[Abstract]:In order to improve the corrosion resistance and wear resistance of martensitic stainless steel, 40Cr13 stainless steel was selected as substrate and niobium plate was used as target material to prepare alloying layer on stainless steel surface by double glow plasma surface metallurgy technology.The effect of niobium temperature on the microstructure, composition, phase composition, surface morphology and hardness of niobium alloy layer was analyzed by means of SEMGDOESX XRD. The formation mechanism and surface hardening mechanism of the layer were also studied.The thickness of alloy layer varies with the change of niobium temperature. The alloy layer formed at 950 鈩，

本文編號：1741588