منابع مشابه
Parametric analysis of Abrasives water jet machining of EN8 Material
Abrasive water jet machine (AWJM) is a mechanical base non-conventional machining process. This is process of removal of materials by impact erosion of high pressure (1500-4000 bar), high velocity of water and entrained high velocity of grit abrasives on a work piece. Experimental investigations were conducted to assess the influence of abrasive water jet machining (AWJM) process parameters on ...
متن کاملWear of composites by abrasives of varying hardness.
The relationship between the wear of three composite resins and the hardness of the abrasive was studied by a two-body abrasion test. The wear rates of the composites increased linearly with abrasive hardness from 530 to 2080 KHN. Measurement of the slope of the wear rate versus abrasive hardness over this range provided a sensitive method for ranking the composites.
متن کاملMechanical Removal in CMP of Copper Using Alumina Abrasives
Results from experiments on the removal of copper using chemical mechanical polishing ~CMP! by alumina abrasives suspended in deionized water are reported. The experiments were carried out in a benchtop polishing tool using IC1000 perforated pads and SUBA 500 pads. The removal rate was measured over a good range of values of the relative velocity and pressure, and for different values of the ab...
متن کاملEffect of Toothpastes with Different Abrasives on Eroded Human Enamel: An in situ/ex vivo Study
The aim of the present study was to investigate the abrasive effect of CaCO3 and SiO2-based fluoride-free experimental toothpastes on eroded human permanent dental enamel and evaluate the effectiveness of waiting periods between acid exposure and tooth brushing. Twelve volunteers wore palatal appliances containing human enamel blocks for two periods of five days each. The appliances were immers...
متن کاملEffect of brushing with two different abrasives on fluoride release by high-viscosity glass ionomer cement.
The effect of brushing with two abrasive levels on the fluoride release of high-viscosity glass ionomers (GIs) was investigated. Forty-eight GI discs were fabricated and randomly assigned to one of the four groups. Treatments, performed for 30 days, included exposure to a carboxymethylcellulose (CMC) solution without fluoride (CMC-F), CMC with 275 ppm fluoride (CMC+F), CMC with fluoride plus br...
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ژورنال
عنوان ژورنال: MRS Bulletin
سال: 1994
ISSN: 0883-7694,1938-1425
DOI: 10.1557/s0883769400048041