本文主要研究内容
作者陈中培（2019）在《飞秒激光制备YG6硬质合金微织构表面浸润性机理研究》一文中研究指出：高速切削中,表面微织构刀具能够提高润滑介质在刀具表面的浸润性,提高润滑效果,减少刀具磨损。本文采用飞秒激光加工硬质合金YG6表面,制备具有不同结构的微凹坑阵列,研究不同参数对微织构形貌的影响规律和表面浸润性机理,具体研究内容及结论如下:(1)运用经典损伤阈值计算方法,研究了飞秒激光加工YG6表面的累积效应。结果表明:随着脉冲数增加,YG6表面损伤阈值逐渐降低,呈现明显的累积效应;试验得到多脉冲损伤阈值和损伤直径的表达式,其中累积系数为0.84±0.02,单脉冲损伤阈值为1.14±0.06J/cm~2。(2)研究飞秒激光不同平均功率、脉冲数和微凹坑间距对锥形微凹坑阵列表面形貌和接触角的影响规律,建立表面几何模型,基于Wenzel状态理论分析微凹坑形貌对表面接触角的影响机理。结果表明:随着平均功率和脉冲数的提高,微凹坑直径满足损伤直径表达式,深度呈线性增长后逐渐变缓,表面接触角呈减小趋势;随着微凹坑间距增大,表面接触角逐渐增大。模型分析结果表明:改变平均功率、脉冲数和微凹坑间距条件下,表面接触角与Wenzel理论接触角满足同一Slogistic曲线关系,拟合曲线得到接触角方程,方程建立了表面接触角与微凹坑直径、深度和间距之间的定量关系,解释了改变激光平均功率、脉冲数和微凹坑间距时微凹坑形貌对表面接触角的影响规律。(3)研究飞秒激光平均功率和扫描次数对柱形微凹坑形貌的影响,以及微凹坑分布密度和单个微凹坑面积对正方形,圆形,正三角形,正六边形四种柱形微凹坑阵列表面接触角的影响规律,建立表面几何模型,基于Wenzel状态理论分析表面形貌对接触角的影响机理。结果表明:平均功率低于200mW微凹坑孔型较好,孔深与扫描次数呈线性关系。四种表面接触角随微凹坑分布密度增大而减小,随单个微凹坑面积增大而增大,且浸润性优劣顺序均为正三角形,正方形,正六边形,圆形。模型分析结果表明,改变微凹坑分布密度和单个微凹坑面积条件下,四种表面接触角与Wenzel理论接触角近似满足同一Slogistic曲线关系,通过拟合曲线得到表面接触角方程,方程建立了接触角与微凹坑分布密度和单个微凹坑面积的定量关系,解释了四种表面接触角随微凹坑结构参数的变化趋势以及表面浸润性的优劣关系。
Abstract
gao su qie xiao zhong ,biao mian wei zhi gou dao ju neng gou di gao run hua jie zhi zai dao ju biao mian de jin run xing ,di gao run hua xiao guo ,jian shao dao ju mo sun 。ben wen cai yong fei miao ji guang jia gong ying zhi ge jin YG6biao mian ,zhi bei ju you bu tong jie gou de wei ao keng zhen lie ,yan jiu bu tong can shu dui wei zhi gou xing mao de ying xiang gui lv he biao mian jin run xing ji li ,ju ti yan jiu nei rong ji jie lun ru xia :(1)yun yong jing dian sun shang yu zhi ji suan fang fa ,yan jiu le fei miao ji guang jia gong YG6biao mian de lei ji xiao ying 。jie guo biao ming :sui zhao mai chong shu zeng jia ,YG6biao mian sun shang yu zhi zhu jian jiang di ,cheng xian ming xian de lei ji xiao ying ;shi yan de dao duo mai chong sun shang yu zhi he sun shang zhi jing de biao da shi ,ji zhong lei ji ji shu wei 0.84±0.02,chan mai chong sun shang yu zhi wei 1.14±0.06J/cm~2。(2)yan jiu fei miao ji guang bu tong ping jun gong lv 、mai chong shu he wei ao keng jian ju dui zhui xing wei ao keng zhen lie biao mian xing mao he jie chu jiao de ying xiang gui lv ,jian li biao mian ji he mo xing ,ji yu Wenzelzhuang tai li lun fen xi wei ao keng xing mao dui biao mian jie chu jiao de ying xiang ji li 。jie guo biao ming :sui zhao ping jun gong lv he mai chong shu de di gao ,wei ao keng zhi jing man zu sun shang zhi jing biao da shi ,shen du cheng xian xing zeng chang hou zhu jian bian huan ,biao mian jie chu jiao cheng jian xiao qu shi ;sui zhao wei ao keng jian ju zeng da ,biao mian jie chu jiao zhu jian zeng da 。mo xing fen xi jie guo biao ming :gai bian ping jun gong lv 、mai chong shu he wei ao keng jian ju tiao jian xia ,biao mian jie chu jiao yu Wenzelli lun jie chu jiao man zu tong yi Slogisticqu xian guan ji ,ni ge qu xian de dao jie chu jiao fang cheng ,fang cheng jian li le biao mian jie chu jiao yu wei ao keng zhi jing 、shen du he jian ju zhi jian de ding liang guan ji ,jie shi le gai bian ji guang ping jun gong lv 、mai chong shu he wei ao keng jian ju shi wei ao keng xing mao dui biao mian jie chu jiao de ying xiang gui lv 。(3)yan jiu fei miao ji guang ping jun gong lv he sao miao ci shu dui zhu xing wei ao keng xing mao de ying xiang ,yi ji wei ao keng fen bu mi du he chan ge wei ao keng mian ji dui zheng fang xing ,yuan xing ,zheng san jiao xing ,zheng liu bian xing si chong zhu xing wei ao keng zhen lie biao mian jie chu jiao de ying xiang gui lv ,jian li biao mian ji he mo xing ,ji yu Wenzelzhuang tai li lun fen xi biao mian xing mao dui jie chu jiao de ying xiang ji li 。jie guo biao ming :ping jun gong lv di yu 200mWwei ao keng kong xing jiao hao ,kong shen yu sao miao ci shu cheng xian xing guan ji 。si chong biao mian jie chu jiao sui wei ao keng fen bu mi du zeng da er jian xiao ,sui chan ge wei ao keng mian ji zeng da er zeng da ,ju jin run xing you lie shun xu jun wei zheng san jiao xing ,zheng fang xing ,zheng liu bian xing ,yuan xing 。mo xing fen xi jie guo biao ming ,gai bian wei ao keng fen bu mi du he chan ge wei ao keng mian ji tiao jian xia ,si chong biao mian jie chu jiao yu Wenzelli lun jie chu jiao jin shi man zu tong yi Slogisticqu xian guan ji ,tong guo ni ge qu xian de dao biao mian jie chu jiao fang cheng ,fang cheng jian li le jie chu jiao yu wei ao keng fen bu mi du he chan ge wei ao keng mian ji de ding liang guan ji ,jie shi le si chong biao mian jie chu jiao sui wei ao keng jie gou can shu de bian hua qu shi yi ji biao mian jin run xing de you lie guan ji 。
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论文作者分别是来自湖北工业大学的陈中培，发表于刊物湖北工业大学2019-07-18论文，是一篇关于飞秒激光论文,微织构论文,硬质合金论文,接触角论文,状态论文,湖北工业大学2019-07-18论文的文章。本文可供学术参考使用，各位学者可以免费参考阅读下载，文章观点不代表本站观点，资料来自湖北工业大学2019-07-18论文网站，若本站收录的文献无意侵犯了您的著作版权，请联系我们删除。