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Models of grindinginduced surface and subsurface
2021年9月1日· A series of fused silica samples are processed with different grinding parameters, and their SD and SSD depths are measured The theoretical models are2021年8月30日· fused silica cylindrical resonators is achievable using a different grinding process com bined with chemical etching, which offers possibilities for developi ng high(PDF) Experimental Study on Variation of Surface
Realtime monitoring of silica ceramic composites
2022年3月1日· Grinding force signal Surface texture curve Spectrum analysis 1 Introduction Silica ceramic composites have been widely applied to radar radome,2022年10月1日· As a practical, efficient, easily accessible, lowcost grinding auxiliary, silica gel can break ππ stacking under mechanochemical conditions This effect couldRate enhancement of using silica gel as a practical, efficient
Crackfree ductile mode grinding of fused silica under
2016年10月1日· Taper grinding experiments on fused silica surfaces without damage demonstrated that critical grinding depth of the ductile–brittle transition was 02 μm [7]2010年9月1日· The ductile mode grinding is a recognized desirable process of fabricating fused silica while the fullbrittle grinding is also a feasible process for its shallowDuctile and Brittle Mode Grinding of Fused Silica ResearchGate
Experimental study on surface integrity and subsurface
2021年6月12日· Zhao et al investigated the surface and subsurface integrity of diamondground optical glasses after electrolytic inprocess dressing (ELID) grinding With a finePMID: 101080/ Exposure to silica dust was studied in the grinding of castings in a steel foundry that used conventional personal samplingSilica exposure in hand grinding steel castings PubMed
Controlled material removal mode and depth of micro
2017年10月15日· The fullbrittle mode grinding is a feasible process for machining fused silica because of its small damage depth grinding surface, high efficiency, low grinding2023年10月18日· The paper presents a new machine that has been built for 3+2axis grinding Profilator 100,used for industrial manufacturing of rotary and spindle profileInvestigations on the causes of process vibrations in CNC grinding
Surface roughening of ground fused silica processed by atmospheric
2015年6月30日· Tip radius of <20 nm was used to reduce the deviation of measurement caused by the stylus tip radius dimension The scanning size was 50 μm × 50 μm The RMS roughness of the fused silica substrates was obtained through the 3D topology results in a quantitative way by using standard instrument software (NanoScope software v613)2021年8月30日· For the axisymmetric shell resonator gyroscopes, the quality factor (Q factor) of the resonator is one of the core parameters limiting their performances Surface loss is one of the dominating losses,Micromachines | Free FullText | Experimental Study on
Micromachines | Free FullText | An Investigation into
2022年7月14日· Subsurface damage of fused silica optics is one of the major factors restricting the performance of optical systems The densificationaffected deformation and fracture in fused silica under a2012年1月1日· A study was conducted to understand the effects of etch depth on the damage threshold of fused silica substrates The study used a 355 nm, 75 ns, 10 Hz Nd:YAG laser to damage test fused silicaCharacterizing subsurface damage in loose abrasive grinding of
OSTIGOV The Effect of HF/NH4F Etching on the Morphology of
2008年4月3日· @article{osti, title = {The Effect of HF/NH4F Etching on the Morphology of Surface Fractures on Fused Silica}, author = {Wong, L and Suratwala, T and Feit, M D and Miller, P E and Steele, R A}, abstractNote = {The effects of HF/NH{sub 4}F, wet chemical etching on the morphology of individual surface fractures (indentations,2019年5月6日· Fused silica material has been widely applied in modern optical systems such as the inertial confinement fusion facility and the ultraviolet lithography system, for its excellent optical properties []However, in traditional fabrication of fused silica optics, the scratch, lateral and medial crack damages are inevitably produced during the grindingInvestigation of Grinding and Lapping Surface Damage Evolution
Formation mechanism of a smooth, defectfree surface of fused silica
2019年7月25日· Besides, the cracks on pristine fused silica surfaces introduced by initial grinding process were completely removed by laser polishing to achieve a defectfree surface The maximum laser polishing rate can reach 388 μm s −1, much higher than that of the traditional mechanical polishing methods2019年12月1日· [1] Zhou L, Xie R Q and Chen X H 2018 Analysis and optimization on cross section profile of fused silica grinding wheel Diamond and Abrasives Engineering 38 5964 Google Scholar [2] Dai Z H, Zhu Y W and Ju Z L 2014 Subsurface Cracks of Borosilicate Glass Loaded by Single Grain of Abrasive Journal of The Chinese CeramicThe Effect of Diamond Wheel Wear on Surface and Sub
Understanding the effect of HFbased wet shallow etching on
The optical performance of fused silica optics used in highpower lasers is known to depend not only on their surface damage resistance, but also on their surface quality Previous studies have shown that good fused silica damage performance and surface quality can be achieved by the use of reactive ion etching (RIE), followed by HFbased wet shallowCoupling of Capillary Electromigration Techniques to Mass Spectrometry Christian NeusüßJennifer RömerOliver HöckerKevin Jooß, in Capillary Electromigration Separation Methods, 2018 1242 Capillary Coatings for CEMS Fused silica capillaries are commonly used due to their convenient handling and inertness In addition, they are available inFused Silica an overview | ScienceDirect Topics
Properties of fused silica Heraeus
Glass can be made from pure silica, but quartz glass (also referred as quartz) has a high glass transition point at around 1200°C, which makes it difficult to form into panes or bottles Quartz glass is the purest form of2022年2月13日· In this paper, HFbased (HF represents hydrofluoride acid) etchant was used as a subsequent fabrication for looseabrasive ground fused silica, and the surface morphology and characteristics of samples were evaluated, meanwhile, the electric/light field distribution around treated cracks was simulated using the finite difference time domainEtching behavior of ground fused silica and light enhancement
Surface roughening of ground fused silica processed by
2015年6月30日· In this paper, a form of APPP, inductively coupled plasma (ICP), is used to process fused silica substrates with fluorocarbon precursor under atmospheric pressure The surface morphology evolution of ICPprocessed substrates was observed and characterized by confocal laser scanning microscope (CLSM), field emission scanning2005年11月28日· @article{osti, title = {Subsurface mechanical damage distributions during grinding of fused silica}, author = {Suratwala, T I and Wong, L L and Miller, P E and Feit, M D and Menapace, J A and Steele, R A and Davis, P A and Walmer, D}, abstractNote = {The distribution and characteristics of surface cracking (ie subSubsurface mechanical damage distributions during grinding of fused silica
ScienceDirect
2023年3月1日· Introduction Fused silica glass, made of pure SiO 2, is widely used in optical fabrication, which has superior optical and thermal properties compared to other kinds of glass [1]For example, fused silica glass has better UV transmission features, and its coefficient of thermal expansion can reach ∼55 × 10 −7Therefore, fused silica glass2021年6月6日· Fused silica is an important material for producing optical components in highpower laser applications []The optical components are machined by grinding, lapping, and polishing technologies []The microcracks appear in the subsurface of the component after the grinding process due to the hardbrittle property of fused silica []Experimental study on nearpolished ultraprecision grinding of
Onmachine precision preparation and dressing of ball
2013年9月28日· In the grinding of high quality fused silica parts with complex surface or structure using ballheaded metal bonded diamond wheel with small diameter, the existing dressing methods are not suitable to dress the ballheaded diamond wheel precisely due to that they are either online in process dressing which may causes collision problem or2022年12月30日· Although glass is in high demand as a material for microfluidic chips, it is still difficult to fabricate microstructures on glass In this paper, polycrystalline diamond tools were fabricated through electrical discharge machining, and the microgrinding process for fused silica using the tools was studied In order to improve the productivity, theMicrofluidic Chip Fabrication of Fused Silica Using Microgrinding
Surface molecular structure defects and laserinduced damage
2017年12月19日· Fused silica optics are widely used in high power laser systems such as National Ignition Facility (NIF) and Laser Megajoule (LMJ) 1,2When subjected to 355 nm laser pulse irradiation at high2008年4月15日· Fused silica samples (10 cm diameter × 1 cm thick) were: (1) ground by loose abrasive grinding (alumina particles 9–30 μm) on a glass lap with the addition of larger alumina particles at various concentrations with mean sizes ranging from 15 to 30 μm, or (2) polished (using 05 μm cerium oxide slurry) on various laps (polyurethane pads orEffect of rogue particles on the subsurface damage of fused silica