site stats

Sm2fe17 xrd

Webb16 juni 2024 · 图3：480 ℃氮化后XRD谱图(a) Sm2Fe17合金通过常规高能球磨处理的粉体；(b) Sm2Fe17合金通过等离. 等离子球磨制备的粉体在氮化后α-Fe相含量很低，接近氮化前的含量，而高能球磨处理的粉在氮化后α-Fe体积分数大大增加，存在Sm2Fe17和α-Fe组成的软磁相，不利于硬磁性 ... Webb18 aug. 2015 · In this study, the R–D process of synthesizing Sm2Fe17 was analyzed by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), and X-ray ...

Analysis on nitration process of Sm2Fe17 powder by XRD method

Webb29 juli 2015 · In order to eliminate the effect of amorphous phase on magnetic properties, SmFe 9−x V x (x = 0, 0.4, 0.8, 1.2) melt-spun ribbons were annealed at 1023 K for 1 h and then quenched in water. Figure 2 shows XRD patterns of annealed samples. It can be seen that the main phases of the as-prepared samples are maintained except that a small … Webb1 nov. 2006 · The result shows that when the Sm2Fe17 powders nitrided for 5 hours from 460°C to 510°C, the lattice constant of the alloy and expanding of the crystal cell increased with the increase of... sicily water slide https://fok-drink.com

高保磁力を有するサマリウム鉄系希土類磁石の磁気特性評価

Webb18 maj 2024 · Preparation of Sm2Fe17−xGaxNy/Cy magnets by a hydrogenation-disproportionation-desorption-recombination process. M. Kubis, L ... and using an x-ray diffraction analyzer (XRD, Bruker AXS). The elemental distributions of the powders were characterized by field emission scanning electron microscopy (FESEM, SEM450) … WebbSm2Fe17 fine particle was formed thorough the reduction of Sm oxide with Ca and diffusion of the reduced Sm into Fe particle. Thus, synthesis of 0.3 Êm sized Sm2Fe17N3 powder requires the smaller Fe fine powder. [2] 0.1 Êm sized Fe fine powder was newly synthesized with hydrogen reduction of sintering-tolerant cubic hematite using calcium … Webb2 apr. 2016 · 1900 鉄 と 鋼 第56年(1970)第14号. Fig.2. Diagram of Fe-O-H system3). 570C以 下ではFe304+4H2二3Fe+4H念0 これらの反応の平衡分圧比は各反応の平衡定数κ=PH2o sicily war history

Analysis on Nitration Process of Sm_2Fe_(17) Powder by XRD …

Category:【综述】等离子球磨技术在材料制备中的应用 - 知乎

Tags:Sm2fe17 xrd

Sm2fe17 xrd

STRUCTURAL AND MAGNETIC PROPERTIES OF Sm2Fe17-xCox …

WebbSm2Fe17 (a) 1㎛ X20k 35 40 45 50 55 60 +''5 u.) Sm2Fe17 &XN D Û SmFe9 (b) • Grain size : 300nm • Grain size : 500nm • Crystal structure : Hexagonal (TbCu 7) • Crystal structure : … Webb粉末X線回折による解析例. 図5.9は、得られた粉末X線回折パターンの例である。 このパターンに現れるピークの強度分布が、構造モデルに対して式()を用いて計算し、それらが一致すれば、構造モデルは妥当なものとなる。構造モデルの可能性が幾つか考えられる場合には、ブラッグの式を変形し、

Sm2fe17 xrd

Did you know?

WebbABSTRACT : Samples of Sm2Fe17-xCox (x = 0.5 –3) arc-melted and subsequently annealed at a temperature 1225 K, were studied by X-ray diffraction (XRD), using the Rietveld …

Webb13 nov. 2024 · These nanocrystalline Sm2Fe17−xSix systems gave good magnetocaloric properties, which however decreased with Si content from 3.29 J/kg K for x = 0 down to … Webb21 apr. 1999 · The structural and magnetic properties of off-stoichiometric 2:17-type compounds Sm2Fe17−xTxM (T=Co, Ti; M=Al, Si; x=0–4) were studied by x-ray powder …

Webb10 juni 2016 · Methods of measuring “perfection” of alignment include examination using magneto-optical Kerr effect and Schulz XRD crystallographic determination.[6,10,18,19] … Webb10 juni 2016 · Methods of measuring “perfection” of alignment include examination using magneto-optical Kerr effect and Schulz XRD crystallographic determination.[6,10,18,19] Elemental Substitution Optimal magnetic properties of Sm2Co17 have been achieved using a quinary alloy represented by the formula Sm(Coa Feb Cuc Zrd)z where “z” is somewhat …

Webbトップ ｜沿革｜ 事業 ｜ 相互協力便覧 ｜ 会報 ｜ 規程 ｜ 加盟館一覧 群馬県大学図書館協議会 akagiサービス終了のお知らせ

Webb(1)塩化ナトリウムのxrd測定 塩化ナトリウムのxrdを例に、定性分析 の方法を説明する。図3は当センターで測定 された塩化ナトリウムのxrd パターンで ある。xrd測定では、縦軸をx線強度、 横軸を2θとしてプロットが行われる。各 sicily walksWebbspecimen with a composition of Sm:Fe=2:17. From the results of X-ray diffraction (XRD), an expected Sm2Fe17 phase, and small amounts of SmFe2, SmN, and ƒ¿-Fe phases were … the pharmacy magazineWebb11 dec. 2024 · X線回折 (XRD)は、1つの結晶を対象とする場合と結晶を砕いた粉末試料を対象とする場合に大別されます。 後者は粉末X線回折 (PXRD)と呼ばれ、試料の準備や測定が簡便なことから物質・材料研究において広く用いられる一般的な測定手法となっています。 ※2．結晶の対称性 結晶中における原子は空間的に規則的な繰り返しパターンに … the pharmacy maine medical centerWebbポイント. 新たに開発した磁石粉末合成プロセスによりサマリウム-鉄-窒素系磁石粉末の保磁力を向上. 重希土類フリーで室温での保磁力が30 kOe、200 ℃での保磁力が10 kOe … sicily warWebb1 feb. 2013 · Sm 2 Fe 17 powder with an average diameter of 10μm was fluorinated using XeF 2 in a sealed Ar-filled tube. Prior to fluorination, the Sm 2 Fe 17 and XeF 2 powders … sicily weather in septemberWebb1 dec. 2024 · The composition, crystal structure, elements distribution, chemical valence and induced mechanism of Sm 2 Fe 17 alloy were analyzed and characterized by ICP, … the pharmacy lincoln neWebbSm-Fe-N系硬質磁性化合物の研究 著者 入山 恭彦 号 1530 発行年 1994 URL http://hdl.handle.net/10097/10337 sicily weather december celsius