等離子噴涂Ni基WC金屬陶瓷涂層的激光重熔工藝研究
[Abstract]:With the rapid development of modern industry, people are demanding more and more machine parts. The use of the environment has also become diversified, many parts must work in high temperature, corrosive gases and other environments. Because of the metal materials developed at present, the performance-price ratio is very low under the condition of satisfying the applicable condition. Modern industry is in urgent need of developing new materials to meet the operational requirements. Ceramic coatings have many advantages in traditional materials. If the ceramic is coated on the metal matrix to form a new composite material, not only the advantages of ceramics and metals are integrated, but also the high toughness and high conductivity of the two materials complement each other, so they are paid more and more attention. In this paper, Ni based WC composite coating was prepared by plasma spraying and laser remelting process, and the finite element model of temperature field stress field in plasma spraying and laser remelting process was established based on ANSYS platform. The evolution law of temperature field under various technological parameters was analyzed, and the microstructure and mechanical properties of the coating were studied. The main research results are as follows: (1). The ANSYS finite element analysis model is designed, the thermal structure coupling calculation of plasma sprayed coating layer by layer is realized, the distribution results of temperature field and stress field are obtained, and the finite element analysis model of laser remelting coating is established. The temperature field and stress field of plasma sprayed Ni/WC coating were studied under different laser remelting process parameters. (2) the microstructure and phase composition of plasma sprayed and laser remelted Ni/WC composite coatings are analyzed by means of SEM,XRD and other testing equipment. The results show that the plasma sprayed coating has a typical layered structure. After laser remelting, the coating surface is smooth and smooth. The bonding mode was changed from mechanical bonding to metallurgical bonding. After decomposition of C element with Cr,Fe element at high temperature, a new hard phase was formed, which further improved the hardness and wear resistance of the coating.
【學(xué)位授予單位】:江西理工大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2017
【分類號】:TG174.4
【參考文獻】
相關(guān)期刊論文 前10條
1 于鶴龍;張偉;郭永明;魏敏;宋占永;;等離子噴涂鎳基合金涂層內(nèi)聚強度的截面劃痕表征[J];摩擦學(xué)學(xué)報;2014年05期
2 許兆美;劉永志;周建忠;蔣素琴;王慶安;汪通悅;洪宗海;;基于生死單元的激光銑削溫度場數(shù)值模擬與驗證[J];紅外與激光工程;2014年06期
3 蔡宏圖;江濤;周勇;;熱噴涂技術(shù)的研究現(xiàn)狀與發(fā)展趨勢[J];裝備制造技術(shù);2014年06期
4 黃立新;姚祺;張曉磊;陽明;;基于分層法的功能梯度材料有限元分析[J];玻璃鋼/復(fù)合材料;2013年02期
5 王吉孝;李長義;滕彬;王小朋;周立濤;;激光重熔對電弧噴涂Ni-5Al涂層結(jié)合強度的影響[J];焊接;2012年11期
6 劉立群;周澤華;王澤華;江少群;丁瑩;;激光重熔處理等離子噴涂陶瓷涂層的研究現(xiàn)狀及展望[J];陶瓷學(xué)報;2012年02期
7 榮烈潤;;先進綠色:激光沖擊表面改性技術(shù)[J];金屬加工(熱加工);2012年07期
8 郭歷倫;陳忠富;羅景潤;陳剛;;擴展有限元方法及應(yīng)用綜述[J];力學(xué)季刊;2011年04期
9 陸益軍;王曉妮;孫倩;;激光重熔等離子噴涂NiCr-Cr_3C_2涂層微觀結(jié)構(gòu)和性能研究[J];陶瓷學(xué)報;2011年03期
10 劉健飛;王志;丁寅森;張雷;;Fe/Al_2O_3梯度涂層的制備與性能[J];山東陶瓷;2011年01期
相關(guān)會議論文 前1條
1 王瑋琳;田宗軍;黃因慧;劉志東;何靜波;;激光重熔金屬涂層的研究現(xiàn)狀與發(fā)展[A];2005年中國機械工程學(xué)會年會第11屆全國特種加工學(xué)術(shù)會議專輯[C];2005年
相關(guān)博士學(xué)位論文 前1條
1 李嘉寧;鈦合金激光熔覆Ti-Al/陶瓷復(fù)合涂層組織結(jié)構(gòu)與耐磨性的研究[D];山東大學(xué);2012年
相關(guān)碩士學(xué)位論文 前8條
1 賈勝凱;等離子噴涂及激光重熔Al_2O_3-TiO_2l涂層的性能研究[D];山東大學(xué);2015年
2 張迎寅;光內(nèi)粉絲同送熔覆工藝及成形研究[D];蘇州大學(xué);2013年
3 樊增彬;WC/Ni基合金激光熔覆工藝及熔覆層特性研究[D];山東大學(xué);2012年
4 徐勤官;陶瓷顆粒增強鐵基合金激光熔覆層的研究[D];山東大學(xué);2012年
5 郝云飛;激光重熔等離子噴涂納米氧化鋯熱障涂層組織與性能研究[D];西南交通大學(xué);2009年
6 謝元峰;基于ANSYS的焊接溫度場和應(yīng)力的數(shù)值模擬研究[D];武漢理工大學(xué);2006年
7 林曉燕;重熔回復(fù)等離子噴涂Ni包WC涂層微觀結(jié)構(gòu)及耐蝕性研究[D];河海大學(xué);2006年
8 范志國;Al_2O_3-MxOy復(fù)合涂層的制備及其磷化工應(yīng)用的中試研究[D];昆明理工大學(xué);2004年
,本文編號:2230521
本文鏈接:http://sikaile.net/kejilunwen/jiagonggongyi/2230521.html