【摘要】：利用低壓等離子噴涂(LPPS)和超音速火焰噴涂(HVOF)分別制備出具有兩種典型組織的Ni Cr Al Y涂層,分別為層片狀組織和粉末顆粒堆積結(jié)構(gòu)。兩種涂層的耐高溫氧化性能試驗在空氣條件下進行,1 100℃分別保溫5、10和20 h,以及在1 200℃和1 300℃分別保溫10 h。結(jié)果表明,在1 100℃等溫氧化條件下,層片狀結(jié)構(gòu)的LPPS涂層的抗高溫性能優(yōu)于顆粒堆積結(jié)構(gòu)的HVOF涂層,并且隨著保溫時間的增加,氧化增重呈現(xiàn)拋物線形式增長。在1 200℃和1 300℃變溫氧化過程中,顆粒堆積結(jié)構(gòu)的HVOF涂層的抗高溫氧化性能高于LPPS涂層。
[Abstract]:Ni Cr Al Y coatings with two typical structures, lamellar structure and powder particle stacking structure, were prepared by low pressure plasma spraying (LPPS) and supersonic flame spraying (HVOF), respectively. The high temperature oxidation resistance tests of the two coatings were carried out under air conditions. The coatings were kept at 1 100 鈩，

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