润滑与密封
潤滑與密封
윤활여밀봉
LUBRICATION ENGINEERING
2013年
11期
44-49
,共6页
摩擦因数%均匀实验%自相关函数%功率谱密度函数
摩抆因數%均勻實驗%自相關函數%功率譜密度函數
마찰인수%균균실험%자상관함수%공솔보밀도함수
friction coefficient%uniform design method%autocorrelation function%power spectral density function
采用等离子喷涂技术制备氧化镁稳定的氧化锆（Mg-PSZ）涂层和氧化钇稳定的氧化锆（YSZ）涂层，在MMW-1型立式万能摩擦磨损试验机上测试2种涂层在室温条件下干摩擦磨损性能；通过均匀设计方法随机选择布点，应用随机过程中的相关性从自相关函数、功率谱密度函数两方面对 YSZ 涂层的摩擦因数进行研究。分析结果表明，YSZ涂层在不同载荷下的耐磨性能要优于 Mg-PSZ 涂层；YSZ 涂层摩擦因数的自相关函数曲线为非平稳随机分布，谱密度函数曲线的最大振幅在低频处出现，而在中频到高频时，振幅波动比较平缓；YSZ 涂层在水平为载荷80 N、转速500 r/min 时，摩擦因数波动最平缓、最稳定，摩擦磨损特性最优。
採用等離子噴塗技術製備氧化鎂穩定的氧化鋯（Mg-PSZ）塗層和氧化釔穩定的氧化鋯（YSZ）塗層，在MMW-1型立式萬能摩抆磨損試驗機上測試2種塗層在室溫條件下榦摩抆磨損性能；通過均勻設計方法隨機選擇佈點，應用隨機過程中的相關性從自相關函數、功率譜密度函數兩方麵對 YSZ 塗層的摩抆因數進行研究。分析結果錶明，YSZ塗層在不同載荷下的耐磨性能要優于 Mg-PSZ 塗層；YSZ 塗層摩抆因數的自相關函數麯線為非平穩隨機分佈，譜密度函數麯線的最大振幅在低頻處齣現，而在中頻到高頻時，振幅波動比較平緩；YSZ 塗層在水平為載荷80 N、轉速500 r/min 時，摩抆因數波動最平緩、最穩定，摩抆磨損特性最優。
채용등리자분도기술제비양화미은정적양화고（Mg-PSZ）도층화양화을은정적양화고（YSZ）도층，재MMW-1형입식만능마찰마손시험궤상측시2충도층재실온조건하간마찰마손성능；통과균균설계방법수궤선택포점，응용수궤과정중적상관성종자상관함수、공솔보밀도함수량방면대 YSZ 도층적마찰인수진행연구。분석결과표명，YSZ도층재불동재하하적내마성능요우우 Mg-PSZ 도층；YSZ 도층마찰인수적자상관함수곡선위비평은수궤분포，보밀도함수곡선적최대진폭재저빈처출현，이재중빈도고빈시，진폭파동비교평완；YSZ 도층재수평위재하80 N、전속500 r/min 시，마찰인수파동최평완、최은정，마찰마손특성최우。
Steady magnesia zirconia Mg-PSZ coatings and yttria magnesia zirconia YSZ coatings were fabricated by using plasma spraying,and their tribological behaviors under room temperature and dry sliding conditions was investigated on the MMW-1 vertical universal friction and wear tester.Through selecting stationing at random by using the uniform design method,and applying the correlation in stochastic process,the measured friction coefficient of YSZ coatings was investiga-ted with respect to self-correlation and power spectra density(PSD)functions.The results show that YSZ coating has better wear-resisting performance than Mg-PSZ coatings.The autocorrelation function curve of YSZ coating friction coefficient is in a nonstationary random distribution.The maximum amplitude of power density curve is in the low frequency,and the trend of amplitude is relatively flat in the mid to high frequency.On the level of load 80 N and speed 500 r/min,the YSZ coating has the most gentle and most stable friction coefficient,and it has optimal friction and wear properties.
