scholarly journals CORRELATION INVESTIGATION OF SURFACE ROUGHNESS IN PROTOTYPED SAMPLES WITH CONDITIONS OF THEIR LOCATION AT MANUFACTURING

2016 ◽  
Vol 2016 (2) ◽  
pp. 108-111 ◽  
Author(s):  
Максим Ларионов ◽  
Maksim Larionov ◽  
Михаил Куликов ◽  
Mikhail Kulikov ◽  
Денис Гусев ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Surface Layer ◽  
High Temperature ◽  
Program Package ◽  
3D Printer ◽  
Basic Tool ◽  
3D Images ◽  
Direct Light ◽  
Basic Plane ◽  
Definition Of

The purpose of this work is to reveal the influence of the location of the product grown upon roughness during shaping at prototyping. To achieve the goal specified there were chosen plates with dimensions 10x10x3mm, and the surface investigated – a plane 10x10mm. Some sets of plates were printed on a 3D printer Envision Ultra 2 of high-temperature photo –polymeric resin NTM 140 according to Direct Light Projection (DLP). The plates made of NTM 140 after extraction from a printer have temperature durability of 140°C. For more exact and deep researches of the phenomenon mentioned there was used a method of atomic – power microscopy (APM) for the definition of the surface micro-relief in samples under investigations. As a basic tool for the analysis of surface micro-relief a scanning microprobe microscope Solver Pro, and program package WSxM allowed obtaining 3D images of a surface layer of samples. It is evident from the results presented that at the formation of a flat by means of the quick prototyping method according to a DLP type technology the most optimum scheme of location is that at which the angle of basic plane slope makes 8°.

scholarly journals Rated definition of degree of cutter coating influence upon parameters of surface layer quality of parts worked

2017 ◽  
Vol 2 (7) ◽  
pp. 20-24
Author(s):  
Вячеслав Безъязычный ◽  
Vyacheslav Bezyazychnyy ◽  
Максим Басков ◽  
Maksim Baskov
Keyword(s):  
Surface Roughness ◽  
Surface Layer ◽  
Residual Stresses ◽  
Layer Surface ◽  
Wear Resistant Coatings ◽  
Cutter Wear ◽  
Definition Of ◽  
Surface Layer Quality ◽  
The Impact

The impact of cutter wear-resistant coatings upon cutting process parameters and characteristics of surface layer quality in the parts worked: residual stresses, a degree and a depth of work hardening of a surface layer, surface roughness is investigated.

scholarly journals SCC Behavior at Hardened Surface Layer of 316(LC) in Water on High Temperature

2009 ◽  
Vol 58 (6) ◽  
pp. 228-233 ◽  
Author(s):  
Kiyoko Takeda ◽  
Akira Taniyama ◽  
Takeo Kudo ◽  
Hitoshi Uchida ◽  
Jun-ichiro Mizuki
Keyword(s):  
Surface Layer ◽  
High Temperature ◽  
Hardened Surface

Roles definition of TiN particles in enhancing the creep properties of IN718C high temperature alloys

2021 ◽  
pp. 161441
Author(s):  
Yuantao Zhao ◽  
Rui Wang ◽  
Yanle Sun ◽  
Lianbo Wang ◽  
Xinfeng Wu ◽  
...  
Keyword(s):  
High Temperature ◽  
Creep Properties ◽  
High Temperature Alloys ◽  
Definition Of

The Modification of Carbon Included Polyethylene Surface by Plasma Treatment for Metallizing Using a Low Pressure RF Discharge Plasma

2005 ◽  
Vol 8 (1) ◽  
Author(s):  
Jeou-Long Lee ◽  
Chung-Ming Liu ◽  
Kuen Ting ◽  
Wei-Kung Cheng ◽  
Takayoshi Tsuchida ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Contact Angle ◽  
Surface Layer ◽  
Discharge Plasma ◽  
Treatment Time ◽  
Low Pressure ◽  
Rf Discharge ◽  
Nickel Layer ◽  
Good Adhesion ◽  
Polyethylene Surface

AbstractSurface modification of the carbon included polyethylene (semi-conductive PE) surface for metallizing using a low pressure RF discharge plasma has been carried out. The contact angle was used as a measure of the wettability of the PE surface. The roughness and the chemical bondings in PE surface layer were analized by DFM and XPS, respectively. Typical results show that the contact angle decreases from approximately 94° to below 10° after several minutes' treatment and recovers to a saturation value when it was put open to the air after treatment. The saturation value of the contact angle is smaller as the gas pressure for treatment is higher and the treatment time is longer but all are below approximately 60° which is still smaller than that of untreated. DFM and XPS results show that the surface roughness and the bondings C-O and C=O in the PE surface layer also increase with increasing the treatment time and seem to be responsible for improving the hydrophilic property of PE. After pretreatment process, nickel was coated on the PE sheet by electrodeposition method and a good adhesion between the nickel layer and the PE surface compared with that of untreated was obtained.

Research on high-temperature oxidation resistance, hot forming ability, and microstructure of Al–Si–Cu coating for 22MnB5 steel

2021 ◽  
Vol 40 (1) ◽  
pp. 397-409
Author(s):  
Ziliu Xiong ◽  
Zhangguo Lin ◽  
Jianjun Qi ◽  
Li Sun ◽  
Guangxin Wu ◽  
...  
Keyword(s):  
Surface Layer ◽  
High Temperature ◽  
Oxidation Resistance ◽  
High Temperature Oxidation ◽  
Hot Stamping ◽  
Optical Microscope ◽  
Hot Forming ◽  
Metal Compound ◽  
Temperature Oxidation ◽  
Substrate Steel

Abstract High-temperature oxidation resistance, hot formability, element distribution, and microstructure of Al-10% Si-(0.5–3.0%)Cu coating were investigated by means of glow discharge spectroscopy, optical microscope, scanning electron microscope, and energy-dispersive spectroscopy. Results show that the addition of Cu can increase high-temperature oxidation resistance above 950°C and improve hot formability so that no crack spreads into substrate steel as hot forming at 33.3% strain. Oxidation film structure is continual and compacting, and Si highly concentrates in the surface layer. The distribution of Cu has skin effect with peaking content 8.2% in the surface layer. After hot stamping, Al and Si diffuse into substrate steel, and Cu diffuses from inner to outer coating. Al–Si–Cu coating has smoother surface, straighter diffusion layer, and finer metal compound than Al–Si coating. Surface and diffusion layers are identified as aluminum oxide, Si-rich, and Cu phase and Al7SiFe2, Al3Fe, and CuAl3, respectively. Al-rich phase and the metal compound are composed of α-Al dissolving Fe, Si, and Cu and Al–Si matrix, Cu3Al, respectively.

Introduction of high tensile strain into Ge-on-Insulator structures by oxidation and annealing at high temperature

2021 ◽  
Author(s):  
Xueyang Han ◽  
ChiaTsong Chen ◽  
Cheol-Min Lim ◽  
Kasidit Toprasertpong ◽  
Mitsuru Takenaka ◽  
...  
Keyword(s):  
Surface Roughness ◽  
High Temperature ◽  
Wafer Bonding ◽  
Present Method ◽  
Thermal Process ◽  
Tensile Strain ◽  
Process Condition ◽  
Thermal Expansion Mismatch ◽  
Physical Origin ◽  
N2 Annealing

Abstract It is demonstrated in this work that a high temperature thermal process including oxidation and N2 annealing at 850 oC can provide tensile strain of ~0.58 % at maximum into Ge-on-Insulator (GOI) structures without any special patterning or external stressors. The different impacts of oxidation and annealing on tensile strain generation, surface roughness and crystal qualities in the GOI structures fabricated by Ge condensation and wafer bonding are systematically examined. Tensile strain of 0.47 % is achieved without severe thermal damages under the optimal thermal process condition, which indicates the high potential of the present method for improving the performance of GOI n-channel MOSFETs. The influence of thermal expansion mismatch between Ge and SiO2 are suggested as a possible physical origin of high amount of tensile strain into GOI structures.

scholarly journals Study of Optimum Cutting While Lathing Carbonate Steel VCN-150 Uses a Layered Carbide Chisel PVD on Dry and Wet Condition

2018 ◽  
Vol 7 (2.13) ◽  
pp. 389
Author(s):  
Muksin R. Harahap ◽  
Ahmad Bakhori ◽  
Suhardi Napid ◽  
Muhammad Rafiq Yanhar ◽  
Abdurrozzaq Hasibuan
Keyword(s):  
Surface Roughness ◽  
High Temperature ◽  
Carbon Steel ◽  
Dry Cutting ◽  
Surface Method ◽  
Significant Difference ◽  
Optimum Cutting ◽  
Wet Condition

To improve the productivity of this machining perhaps it may be recommended in a dry cutting but a dry cutting is recognized very sensitive to a high temperature. In this case, in order to overcome is perhaps required by using a tool carbide either in layers or without any layers whereby each layer has certain superior. There was conducted an experiment to have an optimum cutting on a carbon steel VCN-150 using a layers tool carbide  and Respond Surface Method (RSM) with a CCD operation. The result of study recommended that condition optimum cutting shall be achieved (When cutting tc ) on a medium machining refers to ISO 3685 and medium surface roughness (Ra ) ISO 1320. Statistically, there is no found significant difference between a dry and wet cutting on optimum dry condition.  

INVESTIGATION ON HIGH-TEMPERATURE OXIDIZATION OF MIRROR-QUALITY GROUND STAINLESS STEEL

2010 ◽  
Vol 24 (15n16) ◽  
pp. 3005-3010 ◽  
Author(s):  
KAZUTOSHI KATAHIRA ◽  
HITOSHI OHMORI ◽  
MASAYOSHI MIZUTANI ◽  
JUN KOMOTORI
Keyword(s):  
Surface Roughness ◽  
Stainless Steel ◽  
High Temperature ◽  
High Quality ◽  
Spinel Type ◽  
Combined Process ◽  
Elid Grinding ◽  
Modification Method ◽  
Quality Surface ◽  
High Quality Surface

To investigate the possibility of developing a new surface modification method by the combined process of ELID grinding and high-temperature oxidization, we treated ELID finished specimens and polished specimens by high-temperature oxidization in the atmosphere and performed detailed analysis to determine how the treatment would change the specimen surfaces. The ELID-series showed high quality surface roughness and excellent tribological characteristics as compared with the polished-series. The improved surface properties of the ELID-series seem to result from formation of fine, uniform structures of spinel-type multiple oxides FeCr 2 O 4 and Cr 2 O 3 on the surface by high-temperature oxidization.

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