Material removal mechanisms and characteristics of potassium dihydrogen phosphate crystals under nanoscratching

Hou，Ning1,2; Zhang，Yong3; Zhang，Liang Chi4; Wang，Ming Hai1

2021

10.1007/s40436-021-00356-z

Advances in Manufacturing   影响因子和分区

2095-3127

2195-3597

Potassium dihydrogen phosphate (KDP) crystals are important materials in high-energy laser systems. However, because these crystals are brittle and soft, machining-induced defects often emerge in KDP components. This study aimed to investigate the material removal mechanisms and characteristics of KDP during nanoscratching using Berkovich, spherical, and conical indenters. We found that KDP surface layers could be removed in a ductile mode at the micro/nanoscale and that dislocation motion was one of the main removal mechanisms. Removal characteristics are related to the stress fields generated by indenter geometries. The spherical indenter achieved a ductile removal mode more easily. The lateral force of nanoscratching increased with an increase in the normal force. The coefficient of friction (COF) followed the same trend as the lateral force when spherical and conical indenters were used. However, the COF was independent of the normal force when using a Berkovich indenter. We found that these COF variations could be accurately described by friction models.

Indenter geometry Nanoscratching Potassium dihydrogen phosphate (KDP) crystals Removal mechanism

SCI ; EI

英语

其他

WOS:000662798300001

20212510526901

Crystals ; Friction ; High energy lasers ; Spheres

Lasers, General:744.1 ; Crystalline Solids:933.1

2-s2.0-85108076904

Scopus

1.School of Mechatronics Engineering,Shenyang Aerospace University,Shenyang,110136,China
2.Key Laboratory of Fundamental Science for National Defense of Aeronautical Digital Manufacturing Process,Shenyang Aerospace University,Shenyang,110136,China
3.School of Mechatronics Engineering,Harbin Institute of Technology,Harbin,150001,China
4.Department of Mechanics and Aerospace Engineering,Southern University of Science and Technology,Shenzhen,518055,China

Hou，Ning,Zhang，Yong,Zhang，Liang Chi,et al. Material removal mechanisms and characteristics of potassium dihydrogen phosphate crystals under nanoscratching[J]. Advances in Manufacturing,2021,9:558-567.

Hou，Ning,Zhang，Yong,Zhang，Liang Chi,&Wang，Ming Hai.(2021).Material removal mechanisms and characteristics of potassium dihydrogen phosphate crystals under nanoscratching.Advances in Manufacturing,9,558-567.

Hou，Ning,et al."Material removal mechanisms and characteristics of potassium dihydrogen phosphate crystals under nanoscratching".Advances in Manufacturing 9(2021):558-567.