milling behavior of matrix graphite powders with different binder materials in htgr fuel element

Preparation of spherical fuel elements for HTR

2013/10/1The resinated matrix graphite powder for spherical fuel element is the same as the German A3-3 matrix graphite (Hrovat et al., 1973b) which is composed of 64 wt% natural flake graphite powder, 16 wt% artificial graphite powder, and 20 wt% phenol resin binder.

Field‐Assisted Sintering Technology/Spark Plasma

The resulting material is a high‐strength bioactive material, which offers new possibilities for biomedical applications. 199 Also, non‐equilibrium dielectric and piezoelectric materials can be produced by mixing perovskite powders of different compositions.

(PDF) 2013

The composite materials that can be produced with AM technology include a polymer matrix, ceramic matrix, metal matrix, and fiber and particulate reinforced composites [95]. One of the most important uniform composite families for industrial application is fiber-reinforced composite.

Study on Microstructures and Properties of Porous TiC

2017/1/4Powder metallurgy process was used to fabricate porous titanium carbide (TiC) ceramics, in which TiC powders were taken as the raw materials, nickel was used as the metallic binder and urea was the space-holder. Microstructure, composition and phase of porous TiC ceramics were characterized by scanning electron microscopy (SEM) and x-ray diffraction (XRD). Flexure strength of the porous

Preparation of spherical fuel elements for HTR

2013/10/1The resinated matrix graphite powder for spherical fuel element is the same as the German A3-3 matrix graphite (Hrovat et al., 1973b) which is composed of 64 wt% natural flake graphite powder, 16 wt% artificial graphite powder, and 20 wt% phenol resin binder.

(PDF) Development and application of tool wear: A

Increased density, higher efficiency of Ni than Co binder (i.e., lower cost, higher corrosion resistance, and less environment pollution), formation of single stoichiometry in the TiC compositions (Ti/C:1/1), and the prevention of balls abrasion during milling are other

Additive manufacturing of silicon carbide for nuclear

2020/10/8The U.S. Department of Energy's Office of Scientific and Technical Information article{osti_1684684, title = {Additive manufacturing of silicon carbide for nuclear applications}, author = {Koyanagi, Takaaki and Terrani, Kurt and Harrison, Shay and Liu, Jian and Kato, Yutai}, abstractNote = {Additive manufacturing (AM) is a rapidly evolving technology being considered for nuclear applications.

Carbon materials for ion

2020/12/21Based on anion-intercalation graphitic carbon materials, a number of dual-ion battery and Al-ion battery technologies are experiencing booming development. In this review, we summarize the significant advances of carbon materials in terms of the porous structure, chemical composition, and interlayer spacing control.

An Experiment on the Carbonization of Fuel Compact Matrix Graphite for HTGR

Jeju, Korea, May 17-18, 2012 An Experiment on the Carbonization of Fuel Compact Matrix Graphite for HTGR Young-Woo Lee* Joo Hyoung Kim and Moon Sung Cho Korea Atomic Energy Research Institute, Daedeokdaero 1045, Yuseong-gu, Daejeon, Korea *Corresponding author: ywleekaeri.re.kr

Fabrication methods and anisotropic properties of graphite

2018/2/1The matrix graphite powder is a mixture of natural and synthetic graphite, and phenolic resin binder. The natural graphite and synthetic graphite powders (weight ratio 4:1) were mixed in a glass bottle with 5 ceramic balls using a Turbula shaker mixer for two hours. shaker mixer for two hours.

Nuclear Thermal Propulsion Reactor Materials

2020/3/10Nuclear thermal propulsion (NTP) systems have been studied in both the USA and the former Soviet Union since the 1950s for use in space science and exploration missions. NTP uses nuclear fission to heat hydrogen to very high temperatures in a short amount of

Advanced production routes for metal matrix composites

2020/11/15Agent materials are defined here as materials (salts, binders, acids, lubricants, gases, and so on) used during processing which are somehow beneficial to the final composite, however they are neither a matrix nor reinforcement material.

Materials Science Forum Vol. 899

Similar behavior was noted during ball milling of Ti-Cu-Si-B powders, i.e., the Ti 5 Si 3 phase was formed after milling for 180 minutes. The mechanically alloyed and heat treated Ti-2Cu-22Si-11B alloy presented a matrix of Ti 6 Si 2 B dissolving close to 2 at.-%

Structure and mechanical behavior of in situ developed

The element of magnesium is the 6 th most abundant element in the earth's crust. 1 The density of magnesium (1.739 g/cc) is a minimum among different structural materials. The density of magnesium is approximately equal to two thirds that of aluminum, one fourth that of zinc, and one fifth that of iron. 2 Magnesium and its alloys possess a very high specific strength among engineering metals.

The electrochemical deconsolidation mechanism of

2019/11/1For graphite matrix specimens to be deconsolidated (synthesized graphite matrix specimen), the artificial and natural graphite powders were premixed in the ratio of 1:4, which is the ratio used in HTGR spherical fuel element fabrication.

Carbon materials for ion

2020/12/21Based on anion-intercalation graphitic carbon materials, a number of dual-ion battery and Al-ion battery technologies are experiencing booming development. In this review, we summarize the significant advances of carbon materials in terms of the porous structure, chemical composition, and interlayer spacing control.

IOP Conference Series: Materials Science and Engineering,

Composite materials are found as better choices to be tested for satisfying the researchers' expectations for different structural applications. Various research works are being performed with metal matrix composites (MMC) by incorporating suitable reinforcing agents with them in order to achieve better desirable properties.

US Patent for Materials with extremely durable

2020/10/20In this regard, it has been found that inclusion of different allotropes of carbon such as graphite, amorphous carbon, diamond, C60, carbon nanotubes (e.g., single and/or multi-walled), graphene and/or carbon fibers into the composite materials is effective to

Densification of A3

Matrix graphite A3−3 contains natural flake graphite (64 wt%), artificial graphite (16 wt%), and phenolic resin binder (20 wt%) []. The excellent performance of A3−3 as the matrix graphite for the spherical fuel element in HTGRs suggests that it is also a promising candidate for use in MSRs.

Sintering of MAX

2020/10/2This review focuses on the comparison of the spark plasma sintering (SPS) with other fabrication methods of MAX-phase materials. In the view of optimizing properties for prospective applications, we summarized different routes to synthesize and sinter bulk/powder MAX-phases with various microstructures, discussed the phase composition of MAX-phases obtained by SPS and other

Influence of ball milling process on microstructure and

2020/11/26The effect of different ball milling processes on the strengthening phase and matrix phase in the coating was also explored. Experimental Q235 steel plate with dimensions of 100 mm 60 mm 10 mm was used as the substrate (chemical composition w%: C 0.14–0.22, Mn 0.30–0.65, Si 0.30, S 0.050, P 0.045, Fe. bal).

Solutions for the problems of silicon–carbon anode

2018/6/6Graphite and porous carbon are potential anode materials with relatively small volume change (e.g. graphite's volume expansion rate is about 10.6%) during the lithiation–delithiation process and have excellent cycle stability and electronic conductivity.

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