Subsurface damage minimization of KDP crystals

Yang，Shengyao1,5; Zhang，Liangchi2,3,4; Wu，Zhonghuai5

2022-12-01

10.1016/j.apsusc.2022.154592

APPLIED SURFACE SCIENCE   Impact Factor & Quartile

0169-4332

1873-5584

In nanocutting and nanopolishing of potassium dihydrogen phosphate (KDP) crystals, microscopic abrasive particles scratch the material surfaces and cause subsurface damage. This paper aims to establish scratching maps for subsurface damage minimization in KDP crystals by revealing the deformation and material removal mechanisms of KDP crystals based on large-scale molecular dynamics analyses. It was found that both the indenter size and scratching depth have significant influences on the surface integrity of a machined KDP component. The material can experience no-wear, adhering, ploughing and cutting deformation stages under different scratching conditions, and the variation range of the coefficient of friction reflects the stages of the deformation regimes. Scratching maps were also established as guidelines to quantitatively define the “depth/radius — removal regimes” in different lattice surfaces of KDP, which is particularly helpful for the industry in selecting surfacing conditions for high surface integrity.

Effect of scratching condition Industrial guideline Molecular dynamics analysis Nanoscratching Potassium dihydrogen phosphate Scratching map

SCI ; EI

English

Corresponding

Guangdong Specific Discipline Project[2020ZDZX2006] ; Shenzhen Key Laboratory of Cross-scale Manufacturing Mechanics Project[ZDSYS20200810171201007]

Chemistry ; Materials Science ; Physics

Chemistry, Physical ; Materials Science, Coatings & Films ; Physics, Applied ; Physics, Condensed Matter

WOS:000848235500003

ELSEVIER

20223512630535

Crystals ; Deformation ; Friction ; Molecular dynamics ; Particle size analysis

Physical Chemistry:801.4 ; Crystalline Solids:933.1 ; Materials Science:951

MATERIALS SCIENCE

2-s2.0-85136489320

Scopus

1.School of Mechanical and Mining Engineering,The University of Queensland,Brisbane,4072,Australia
2.Shenzhen Key Laboratory of Cross-scale Manufacturing Mechanics,Southern University of Science and Technology,Shenzhen,Guangdong,518055,China
3.SUSTech Institute for Manufacturing Innovation,Southern University of Science and Technology,Shenzhen,Guangdong,518055,China
4.Department of Mechanics and Aerospace Engineering,Southern University of Science and Technology,Shenzhen,Guangdong,518055,China
5.School of Mechanical and Manufacturing Engineering,University of New South Wales,Sydney,2052,Australia

Yang，Shengyao,Zhang，Liangchi,Wu，Zhonghuai. Subsurface damage minimization of KDP crystals[J]. APPLIED SURFACE SCIENCE,2022,604.

Yang，Shengyao,Zhang，Liangchi,&Wu，Zhonghuai.(2022).Subsurface damage minimization of KDP crystals.APPLIED SURFACE SCIENCE,604.

Yang，Shengyao,et al."Subsurface damage minimization of KDP crystals".APPLIED SURFACE SCIENCE 604(2022).