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磨削微裂纹
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  “磨削微裂纹”译为未确定词的双语例句
     It is showed that:(1)the major surface damage patterns due to grinding are microplastic deformation trace,fracture chipping pit,microcracks,and subsidence in the loosen region of material;
     结果表明:磨削损伤的主要形式有显微塑性变形磨痕、断裂剥落坑、磨削微裂纹和材料疏松区的塌坑;
短句来源
  相似匹配句对
     Grinding Ceramics
     陶瓷的磨削
短句来源
     MICRO-CRACK CHROMIUM PLATING
     微裂纹镀铬
短句来源
     Abrasive Machining
     磨削加工
短句来源
     The key measures to increase service life of work roll are periodically grinding roll to remove micro crack and surface nondestructive flaw\|detecting.
     使用轧辊时定期磨削去除微裂纹和表面无损探伤是提高轧辊使用寿命的关键措施
短句来源
     The surface layer microcrack configuarations and distribution of single diamond grit ground and diamond wheel ground wafer are also studied.
     研究了单颗磨粒磨削硅片和金刚石砂轮磨削硅片表面层微裂纹的特征与分布;
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Ground surface crack is more frequency and more dangerous than other grinding damages to structure ceramics. In this paper, the cracks mechanism, pattern feature, and extension to subsurface were studied systematically by using Identative Fracture Mechanics, and the knowledge of grinding heat stress and ceramic microstructure. A substantial of SEM observation was taken on the micro state of ground surface layer also. It is showed from the investigation that: (1) Weather grinding crack is caused depends on the...

Ground surface crack is more frequency and more dangerous than other grinding damages to structure ceramics. In this paper, the cracks mechanism, pattern feature, and extension to subsurface were studied systematically by using Identative Fracture Mechanics, and the knowledge of grinding heat stress and ceramic microstructure. A substantial of SEM observation was taken on the micro state of ground surface layer also. It is showed from the investigation that: (1) Weather grinding crack is caused depends on the ratio of ceramic fracture toughness K(1c) to hardness H, ceramic thermal properties, and grinding process parameters. (2) Main cracks in ground surface are median/ radial cracks, uncontinuous micro plastic deformation cracks, and heat cracks. (3) Grinding cracks pass through crystal for fine grain ceramics and along the boundary of crystal for thick grain ceramics. (4) Median cracks would penetrate subsurface deep.

结构陶瓷的磨削表面微裂纹是较常见和较危险的磨削损伤.本文应用压痕断裂力学、磨削表面热应力和陶瓷微观结构的有关知识分析了结构陶瓷表面裂纹的形成机理、形状特征及在次表面的延伸.并对几种典型结构陶瓷磨削表面层的微观状态进行了大量的SEM观察,结果表明:(1)磨削微裂纹与陶瓷的断裂韧性K(1c)和显微硬度H之比、陶瓷的热特性及磨削工艺参数有关(2)磨削微裂纹的主要形式有压痕效应径向裂纹、热裂纹.(3)细晶陶瓷多为穿晶裂纹,晶粒较大的陶瓷多为沿晶裂纹(4)磨削压痕裂纹在次表面有较深的延伸.

The mechanism and features of ground surface damage as well as the effect of grinding on defects of ceramics were investigated by combining identative fracture mechanics with cutting geometry of abrasive grain,and SEM analysis of ground surface and subsurface for ceramics Al 2O 3,Si 3N 4 and PSZ.It is showed that:(1)the major surface damage patterns due to grinding are microplastic deformation trace,fracture chipping pit,microcracks,and subsidence in the loosen region of material;(2)the features of grinding...

The mechanism and features of ground surface damage as well as the effect of grinding on defects of ceramics were investigated by combining identative fracture mechanics with cutting geometry of abrasive grain,and SEM analysis of ground surface and subsurface for ceramics Al 2O 3,Si 3N 4 and PSZ.It is showed that:(1)the major surface damage patterns due to grinding are microplastic deformation trace,fracture chipping pit,microcracks,and subsidence in the loosen region of material;(2)the features of grinding damage are decided by the mechanical properties and microstructure of ceramics,and grinding parameters adopted.

分析陶瓷磨削过程并通过对Al2O3,Si3N4+ZrO2,PSZ等陶瓷磨削表面及次表面的SEM观察,研究了磨削损伤的形成机理和特征。结果表明:磨削损伤的主要形式有显微塑性变形磨痕、断裂剥落坑、磨削微裂纹和材料疏松区的塌坑;磨削损伤的特征取决于陶瓷力学性能、微观结构及磨削参数

A variety of damages, especially, damages in the defective areas of materials,that are derived from the machining process appear as one of the important reasons, leading to faults in ceramic parts in their application. By grinding test and SEM analysis on the ground surface of structural ceramics Al 2O 3, Si 3N 4, and Mg ZrO 2 et al, damaging actions in the grinding process upon defective of areas ceramics such as pore, looseness, crystal boundary and interstice are investigated. It is shown that there...

A variety of damages, especially, damages in the defective areas of materials,that are derived from the machining process appear as one of the important reasons, leading to faults in ceramic parts in their application. By grinding test and SEM analysis on the ground surface of structural ceramics Al 2O 3, Si 3N 4, and Mg ZrO 2 et al, damaging actions in the grinding process upon defective of areas ceramics such as pore, looseness, crystal boundary and interstice are investigated. It is shown that there is little effect by grinding on the microstructure of fine pores inside crystals,and that grinding damages in large pores, whether rounded or irregular, are negligible. However, remarkable subsidence and micro cracks are produced in areas of looseness and crystal boundaries during grinding, which are detrimental to the mechanical properties of ceramic materials.

陶瓷缺陷区的加工损伤是导致材料失效的主要原因之一。本文通过对 Al2 O3 、Si3 N4 和 Mg-Zr O2 结构陶瓷的磨削试验研究 ,分析了磨削对气孔、疏松及晶粒间界这类缺陷区域的损伤作用。结果表明 ,磨削对晶粒内小气孔和大气孔区域的损伤作用都很小 ;而在疏松及晶界区域会产生危害明显、尺寸较大的塌坑和磨削微裂纹

 
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