Advanced Cold Isostatic Press MgO-C Brick

2019 ◽  
Author(s):  
A. Yoshioka ◽  
M. Iida ◽  
S. Kaneko ◽  
H. Tomiya ◽  
H. Kakihara
Keyword(s):  
Cold Isostatic Press

scholarly journals Effect of Input Parameter of Cold Isostatic Press (CIP) Towards Properties of Zirconia Block

2019 ◽  
Vol 9 (1) ◽  
pp. 5908-5912
Keyword(s):  
Mechanical Properties ◽  
Wide Spectrum ◽  
Input Parameter ◽  
Strength Properties ◽  
Cold Isostatic Pressing ◽  
X Ray Diffraction ◽  
Cold Isostatic Press ◽  
Forming Process ◽  
Soaking Time ◽  
Four Levels

Zirconia have become widely studied as consequence of their outstanding mechanical properties, such as hardness, mechanical strength and fracture toughness, which allow them to cover a wide spectrum of applications as structural ceramics, including the field of biomaterials. This study was to compare the strength properties of zirconia block with and without Cold Isostatic Press (CIP). The mechanical properties of zirconia block with and without CIP were characterized. Samples of zirconia block will undergo forming process via Cold Isostatic Pressing (CIP), four levels of soaking time (no CIP, 60, 90 and 120 minutes). All of the sample with different soaking time then were sinter in the furnace. The parameter for sintering process was fixed 1300ºC at rate of 3ºC / min. All of the sample were tested for its strength properties using Vickers test. The density and shrinkage of the zirconia block was be analyzed. Scanning Electron Microscope (SEM) and X-Ray Diffraction (XRD) were used to characterize samples if zirconia blocks.

A Study on the Micro Property Testing of Micro Embossing Patterned Metallic Thin Foil

2007 ◽  
Vol 345-346 ◽  
pp. 335-338
Author(s):  
Hye Jin Lee ◽  
Nak Kyu Lee ◽  
Hyoung Wook Lee
Keyword(s):  
Mechanical Properties ◽  
Optimal Design ◽  
Design Procedure ◽  
Thin Foil ◽  
Property Testing ◽  
Rolling Process ◽  
Industrial Technology ◽  
Cold Isostatic Press ◽  
Nano Indentation ◽  
Thin Foils

In this paper, Experimental results on the measurement of mechanical properties of fine patterns in the MEMS structure are described. The mechanical properties of embossing patterns on metallic thin foil is measured using the nano indentation system, that is developed by Korea Institute of Industrial Technology(KITECH). These micro embossing patterns are fabricated using CIP(Cold Isostatic Press) process on micro metallic thin foils(Al-1100) that are made by rolling process. These embossing patterned metallic thin foils(Al-1100) are used in the reflecting plate of BLU(Back Light Unit) and electrical/mechanical MEMS components. If these mechanical properties of fine patterns are utilized in a design procedure, the optimal design can be achieved in aspects of reliability as well as economy.

scholarly journals The Effect of the Addition of Y2O3 on the Microstructure of Polycrystalline Alumina Ceramics

Proceedings ◽  
2018 ◽  
Vol 2 (23) ◽  
pp. 1407
Author(s):  
Serkan Abalı ◽  
Cem Uğur Karaçam
Keyword(s):  
Bending Strength ◽  
Xrd Analysis ◽  
Milling Process ◽  
Alumina Ceramics ◽  
Mechanical Behaviors ◽  
Cold Isostatic Press ◽  
Powder Mixtures ◽  
Polycrystalline Alumina ◽  
Microscope Images ◽  
Pure Al2o3

In the scope of this study, a powder mixture was prepared that contained 3 Al2O3-Y2O3 consisting of 99.99% pure Al2O3 and aluminum oxide of 65–67% and 70% by weight of 99.999% pure Y2O3 powders. After the powders were weighed on a precision scale, the milling process was carried out in a vibratory disc mill. For the granulation, 3 powder mixtures that were subject to sintering were sieved to a size of less than 106 µm in a powder sieve shaker. The powders were shaped with a cold isostatic press after this step and the 3 acquired samples were sintered for 12 h under a temperature of 1923 K. Selected physical and mechanical behaviors were taken by evaluating microhardness measurements, bending strength XRD analysis and electron microscope images of the 3 sintered samples. The changes in the Y2O3 additive and phase composition, microstructure, and mechanic properties were examined.

Preparation of SiC-Based Composites by Cold Isostatic Press

2010 ◽  
Author(s):  
M. B. Harun ◽  
M. H. Halim ◽  
H. Yazid ◽  
Z. Selamat ◽  
M. S. Sattar ◽  
...  
Keyword(s):  
Cold Isostatic Press

Effects of Particle Sizes and Natural Polymers on Mechanical Properties of Alpha Tricalcium Phosphate Cements

MRS Advances ◽  
2016 ◽  
Vol 1 (18) ◽  
pp. 1277-1282
Author(s):  
Shota Ishii ◽  
Tomoaki Sugiyama ◽  
Jeffrey S. Cross ◽  
Toshiyuki Ikoma
Keyword(s):  
Mechanical Properties ◽  
Tricalcium Phosphate ◽  
Particle Sizes ◽  
Dicalcium Phosphate Dihydrate ◽  
Natural Polymers ◽  
Cold Isostatic Press ◽  
Spray Dry ◽  
Calcium Phosphate Cements ◽  
Phosphate Dihydrate ◽  
Tilapia Scale

ABSTRACTCalcium phosphate cements show self-hardening reaction upon mixing with liquids to form calcium-deficient hydroxyapatite (CDHA) or dicalcium phosphate dihydrate. The effects of particle sizes, crystallinities, and natural polymers such as tilapia scale collagen (Col) and hyaluronic acid as a dispersant on the mechanical properties of alpha tricalcium phosphate (TCP) cements mixed with citric acid (CA) as an additive were investigated. Three types of alpha TCP particles were fabricated with spray-dry (SD; 14 μm), freeze-dry (FD; 45 μm), and cold isostatic press (CIP; 134 μm) methods, followed by sintering at 1300°C and ground/crushed. The amounts of Ca dissolution from these particles were in the order of SD > FD > CIP. The CA liquid was added to the powders of SD-FD or SD-CIP, and kneaded under different liquid/powder ratios. The cements containing CIP particles showed lower compressive strength at 22.9 ± 1.5 MPa than those containing FD particles at 28.3 ± 2.5 MPa, even though the apparent densities of the cements containing CIP material was higher. Although the packing density of powders is an important factor on the mechanical properties of cements, the dissolution of Ca ion has a greater impact on the mechanical properties. The addition of Col into the cements increased the mechanical properties at 33.6 ± 2.5 MPa at 1 day to enhance the re-precipitation of CDHA.

Fabrication of Bioactive Polylactic Acid Composite Formed by 3D Printer

2014 ◽  
Vol 631 ◽  
pp. 160-165
Author(s):  
Ryoki Karashima ◽  
Takeshi Yabutsuka ◽  
Takeshi Yao
Keyword(s):  
Polylactic Acid ◽  
3D Printer ◽  
Cold Isostatic Press

We precipitated Apatite Nucleus (AN) by raising pH of SBF. We mixed various concentration of AN in polylactic acid (PLA) and pressed by uniaxial press and cold isostatic press. We investigated the effect of AN concentration on bioactivity. We fabricated composite of PLA and AN configurating the shape by using 3D printer. The composite showed high bioactivity.

Effects of Sr and Ni-Dopants on the Structure and Conductivity of Lanthanum Chromite

2010 ◽  
Vol 93-94 ◽  
pp. 558-561
Author(s):  
Anuchit Ruangvittayanon ◽  
Sutin Kuharuangrong
Keyword(s):  
Electrical Conductivity ◽  
Calcination Temperature ◽  
Perovskite Phase ◽  
Lanthanum Chromite ◽  
Chemical Compositions ◽  
Cold Isostatic Press ◽  
A Value ◽  
Maximum Conductivity ◽  
Icp Analysis

Compositions of lanthanum chromite substituted with Sr on the La site and Ni on the Cr site were synthesized by Citrate gel. The suitable calcination temperature of these compositions was 1100°C for 4 hrs to obtain a perovskite phase. The sample bars were formed by cold isostatic press and sintered at 1400°C for 5 hrs in air. The phase, microstructure, electrical conductivity were determined by XRD, dc four-probe as a function of temperature and their chemical compositions were identified by ICP analysis. The result of La0.9Sr0.1Cr0.5Ni0.5O3-δ shows the maximum conductivity of 72.76 Scm-1at 800°C in air. With further addition of Sr dopant, the conductivity of La0.8Sr0.2Cr0.5Ni0.5O3-δ decreases to a value of 54.98 Scm-1. In addition, the structure tends to change from orthorhombic to rhombohedral.

Effects of High Pressure Using Cold Isostatic Press on the Physical Properties of Nano-SiC-Doped MgB2

2014 ◽  
Vol 28 (2) ◽  
pp. 481-485 ◽  
Author(s):  
M. Shahabuddin Shah ◽  
Mohammad Shahabuddin ◽  
Jafar M. Parakkandy ◽  
Nasser S. Alzayed ◽  
Niyaz Ahmad Madhar ◽  
...  
Keyword(s):  
High Pressure ◽  
Physical Properties ◽  
Cold Isostatic Press ◽  
Doped Mgb2

The Effect of Pressure and Pore-Forming Agent on the Mechanical Properties of Porous Titanium

2011 ◽  
Vol 217-218 ◽  
pp. 1191-1196
Author(s):  
Peng Zhang ◽  
Yuan Chen Qi ◽  
Wei Li
Keyword(s):  
Mechanical Properties ◽  
Powder Metallurgy ◽  
Cortical Bone ◽  
Young’S Modulus ◽  
Young's Modulus ◽  
Porous Titanium ◽  
Human Bone ◽  
Cold Isostatic Press ◽  
Effect Of Pressure ◽  
Porous Ti

Porous titanium compacts were fabricated by powder metallurgy using cold isostatic press with and without pore forming agents. Their microstructure and mechanical properties were investigated in this study. These alloy powders were sintered under 1300°C in vacuum of 10-3 Pa for 2h, followed by furnace cooling. Young’s modulus of sintered Ti could equal that of human’s dense bones. It was found that the strength of porous Ti enhanced by increasing the pressure or decreasing the amounts of pore forming agents. We prepared a porous pure Ti with 30wt.% NH4HCO3 as pore forming agents whose modulus was near to the human cortical bone, as compared in the range from 10 to 30GPa of Young’s modulus for human bone.

Shape Forming and Microwave Sintering of Thin Wall Tubular Lithium Aluminate

2007 ◽  
Vol 280-283 ◽  
pp. 785-790 ◽  
Author(s):  
Yun Han Ling ◽  
Wei Lin ◽  
Zuoz Hong Jiang ◽  
Xin De Bai
Keyword(s):  
Crystal Size ◽  
Microwave Sintering ◽  
Average Particle Size ◽  
Average Particle ◽  
Pressure Casting ◽  
Thin Wall ◽  
Lithium Aluminate ◽  
Cold Isostatic Press ◽  
Bimodal Pore Size Distribution ◽  
Average Compressive Strength

Thin wall tubular Lithium aluminate ceramics have special application background. The microwave synthesis of LiAlO2 ultrafine powder, shape forming and microwave sintering of lithium aluminate pipes with 1mm in thickness were conducted in this paper. The results showed: (1) A controllable ratio of alpha to gamma phase LiAlO2 with average particle size of 0.3 µm can be synthesized via microwave radiation at temperature of 650-800°C within an hour; (2) Cold press and cold isostatic press are feasible methods to form LiAlO2 thin-wall tube and their mechanical properties are superior to those molded via hot pressure casting. (3) Lithium aluminate ceramic was successfully fabricated via microwave sintering, a uniform crystal size within 2-4µm, a typical bimodal pore size distribution and a average compressive strength more than 600MPa were obtained at 1300°C for 30min.

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