04-22
2020year
US4919868A - Production and sintering of reaction bonded

A method for producing a sintered reaction bonded silicon nitride ceramic reinforced with silicon carbide whiskers is disclosed. The method comprises mixing powdered silicon having an average particle size not greater than 5 μm with from 3 to 7 percent each of MgO and CeO 2 and from 10 to 35 percent of silicon carbide whiskers, from 15 to 50 percent of silicon nitride or from 10 to 35 percent

04-22
2020year
Good Prices Great Value Silicon Carbide Vacuum Dental Furnace

Good Prices Great Value Silicon Carbide Vacuum Dental Furnace, Find Complete Details about Good Prices Great Value Silicon Carbide Vacuum Dental Furnace,Silicon Carbide Vacuum Heat Induction Furnace,Great Value Silicon Carbide Vacuum Heat Induction Furnace,Dental Furnace from Industrial Furnace Supplier or Manufacturer-Shenyang North True Vacuum Technology Co., Ltd.

04-22
2020year
vacuum-furnaces.com

pressure. No mention of the furnace hot zone was made by these last two references. Lange [4] reported sintering small cylinders from the Si-Y-O-N system using loosely packed Si3N4 powder in a graphite crucible. He used a tungsten element furnace which was first vacuum evacuated and then back-filled with N2 to atmospheric pressure.

04-22
2020year
Centorr Vacuum Industries News | Centorr Vacuum Industries

2001 November, 2001 Centorr/Vacuum Industries Introduces Line of Specialized Batch and Continuous Furnaces Designed for Silicon Carbide Diesel Particulate Filters and Reaction Bonded Silicon Carbide Articles

04-22
2020year
Reaction Bonded Silicon Carbide: SFF, Process Refinement and

Reaction bonded silicon carbide (RBSiC) has a wide variety of industrial applications and a manufacturing process based on Selective Laser Sintering (SLS) has been demonstrated in previous research at the University of Texas. That study was directed toward semiconductor manufacturing applications and was based on prior indirect SLS methods.

04-22
2020year
Hot-Zone Design for Vacuum Furnaces - Industrial Heating

Sep 12, 2007 · A hot zone can be constructed in either rectangular or cylindrical form, with the latter being far more prominent in vacuum furnaces today. All hot zones are constructed in modular form for ease of installation into and removal from the vacuum chamber (Fig. 1).

04-22
2020year
Vacuum Graphitization Furnace, Vacuum Graphitization Furnace

Vacuum Graphitization Furnace from Shanghai Gehang Vacuum Technology Co., Ltd.. Search High Quality Vacuum Graphitization Furnace Manufacturing and Exporting supplier on Alibaba.com.

04-22
2020year
vacuum-furnaces.com

pressure. No mention of the furnace hot zone was made by these last two references. Lange [4] reported sintering small cylinders from the Si-Y-O-N system using loosely packed Si3N4 powder in a graphite crucible. He used a tungsten element furnace which was first vacuum evacuated and then back-filled with N2 to atmospheric pressure.

04-22
2020year
Formation and Sintering Mechanisms of Reaction Bonded Silicon

Formation and Sintering Mechanisms of Reaction Bonded Silicon Carbide-Boron Carbide Composites. The sa mples were sint ered in a graphite furnace under vacuum at varied .

04-22
2020year
Sintering Furnaces - Materials Research Furnaces, LLC

MRF, Inc. is widely established in the sintering industry with its line of custom-built high-throughput sintering furnaces. Designs range from a top loading furnace for smaller batch loads, to larger single, dual, or five-chamber bottom loading designs for large loads, increasing throughput drastically.

04-22
2020year
Centorr Vacuum Industries News | Centorr Vacuum Industries

2001 November, 2001 Centorr/Vacuum Industries Introduces Line of Specialized Batch and Continuous Furnaces Designed for Silicon Carbide Diesel Particulate Filters and Reaction Bonded Silicon Carbide Articles

04-22
2020year
Formation and Sintering Mechanisms of Reaction Bonded Silicon

Reaction sintering of boron carbide represents an attractive densification process. In this work, sintering mechanisms of silicon carbide and boron carbide composites were studied. Mixed boron carbide/graphite mixtures were sintered in a vacuumed graphite furnace between 1380 and 1450oC.

04-22
2020year
Permeability Enhancement in Porous-Sintered Reaction-Bonded

the feasibility of lowering the pressure drop of porous sintered reaction-bonded silicon nitrides, permeability tests were con-ducted for specimens with different porosity and pore structure. The results showed that pore former size is a minor factor, while permeability (k) had a strong dependency on the amount of pore former.

04-22
2020year
US4127630A - Reaction bonded silicon nitride - Google Patents

A new form of reaction bonded silicon nitride is described along with the process of making this new product. The product is characterized by isotropic structure, extremely fine pore and grain size, high strength and a high ratio of alpha silicon nitride to beta silicon nitride.

04-22
2020year
Resistance Heating Vacuum Sintering Furnace

A resistance-heated ultra-high temperature vacuum sintering furnace is proposed in this paper. Vacuum sintering furnace is a special technical equipment for ultra-high temperature sintering process of reaction bonded silicon carbide products, which can meet the requirements of industrial production of this product.

04-22
2020year
Reaction Sintering - ScienceDirect

If sintering aids, similar to those employed in hot pressing or pressureless sintering, are added to the silicon powder before nitridation, the reaction-bonded material can be sintered at temperatures in excess of 1800 °C to a dense silicon nitride with greater than or equal to 98% of theoretical density (Giachello and Popper 1979, Mangels

04-22
2020year
Strength of Hot Isostatically Pressed and Sintered Reaction

The hot isostatic pressing of reaction bonded Si3N4 containing Y2O3 pro- duced specimens with greater room temperature strengths than those by high pressure nitrogen sintering of the same material. bend strengths for hot isostatically pressed reaction bonded silicon nitride and high pressure nitrogen sintered reaction bonded silicon nitride

04-22
2020year
Vacuum Sintering Furnace - SIMUWU Vacuum Furnace

Vacuum Sintering Furnace. Vacuum sintering, refers to the process that making the powder material into dense material in the condition of the vacuum.People use this process to produce ceramics, powder metallurgy, refractories, ultra-high temperature materials.

04-22
2020year
Silicon carbide ceramics sintering process - Vacuum Furnace

Silicon carbide ceramics sintering process. Silicon carbide ceramic is a new and with good performance of the friction material.It has the quality of light weight,high heat intensity and strong resistance to radiation; and has property of high self-lubricating low friction coefficient, high hardness, wear resistance,good pair performance,high chemical stability, corrosion resistance,good

04-22
2020year
A Vacuum Furnace Process for DTM's RapidSteel 2.0 Material

A Vacuum Furnace Process for DTM's RapidSteel 2.0 Material Klas Boivie, Torsten Kjellberg Woxencentrum, KTH, The Royal Institute ofTechnology Sweden Abstract The work described in this paper investigates the possibility to use a vacuum furnace in DTM'sRapidTool LRprocess. This alternative process route is brought about to