Диспрозий cas 7429-91-6 диспрозия металла диспрозия плазмы спектроскопии по выбросу

Type:
Surface Treatment:
Technique:
Brand Name: MOSINTER
марка: mosinter
КАС: 7429-91-6
появление: серебристый металл
молекулярная масса: 162.500
молекулярная формула: ду
температура плавления: 1409℃
точка кипения: 2562℃
теплота плавления: 11
плотность: 8551kg / m³
псевдоним: диспрозия металла
Место происхождения: Sichuan
Китай (материк)
Вид бизнеса: производитель, торговая компания
Основные продукты: Присадки для бензина и дизельного топлива,Фармацевтические товары,огнезащитные продукты,резиновые добавки,химикаты для обработки воды
Основные экспортные рынки: Восточная Европа

Mr. Fedor

департамент: продажи др.
Описание продукта

оплаты и доставки термины:

Условия оплаты: L/C, D/A, T/T
MOQ: 15 Килограмм
транспортные средства: воздушный транспорт, морские перевозки, наземный транспорт

объем подачи воды:

производственная мощность: 50 т / год
упаковка:Соответствии с требованиями заказчика
Дата доставки: с 7 дней

Продукт:

диспрозий используется в сочетании с ванадием и другими элементами, в создании лазерных материалов и коммерческого освещения.

Описание продукта:

dysprosium (CAS: 7429-91-6)


main content :dy/trem >99. 9%

re elements % (min)

non-re elements  % (min)
tb  0. 026 fe   0. 036
gd   0. 010    si   0. 010
ho   0. 010 al   0. 012
er   0. 010 ca   0. 026

y    0. 010

mg   0. 010

c     0. 010

trem   >99. 42%

dysprosium is a chemical element with the symbol dy and atomic number 66. it is a rare earth element with a metallic silver luster. dysprosium is never found in nature as a free element, though it is found in various minerals, such as xenotime. naturally occurring dysprosium is composed of 7isotopes, the most abundant of which is 164dy.

dysprosium was first identified in 1886 by paul émile lecoq de boisbaudran, but was not isolated in pure form until the development of ion exchangetechniques in the 1950s. dysprosium is used for its high thermal neutron absorption cross-section in making control rods in nuclear reactors, for its high magnetic susceptibility in data storage applications, and as a component of terfenol-d. soluble dysprosium salts are mildly toxic, while the insoluble salts are considered non-toxic.

химические свойства

dysprosium metal tarnishes slowly in air and burns readily to form dysprosium(iii) oxide:

4 dy + 3 o2 → 2 dy2o3

dysprosium is quite electropositive and reacts slowly with cold water and quite quickly with hot water to form dysprosium hydroxide:

2 dy (s) + 6 H2O (l) → 2 dy(oh)3 (aq) + 3 h2 (g)

dysprosium metal vigorously reacts with all the halogens at above 200 °c:

2 dy (s) + 3 f2 (g) → 2 dyf3 (s) [green]2 dy (s) + 3 cl2 (g) → 2 dycl3 (s) [white]2 dy (s) + 3 br2 (g) → 2 dybr3 (s) [white]2 dy (s) + 3 i2 (g) → 2 dyi3 (s) [green]

dysprosium dissolves readily in dilute sulfuric acid to form solutions containing the yellow dy(iii) ions, which exist as a [dy(oh2) 9]3+ complexes:[5]

2 dy (s) + 3 h2so4 (aq) → 2 dy3+ (aq) + 3 so4 2−(aq) + 3 h2 (g)

the resulting compound, dysprosium(iii) sulfate, is noticeably paramagnetic.

Приложения

dysprosium is used, in conjunction with vanadium and other elements, in making laser materials and commercial lighting. because of dysprosium's high thermal neutron absorption cross-section, dysprosium oxide-nickel cermets are used in neutron-absorbing control rods in nuclear reactors. dysprosium-cadmium chalcogenides are sources of infrared radiation which is useful for studying chemical reactions. because dysprosium and its compounds are highly susceptible to magnetization, they are employed in various data storage applications, such as in hard disks.

neodymium-iron-boron magnets can have up to 6% of the neodymium substituted with dysprosium to raise the coercivity for demanding applications such as drive motors for electric vehicles. this substitution would require up to 100 grams of dysprosium per car produced. based on toyota's projected 2 million units per year, the use of dysprosium in applications such as this would quickly exhaust the available supply of the metal. the dysprosium substitution may also be useful in other applications, as it improves the corrosion resistance of the magnets.

dysprosium is one of the components of terfenol-d, along with iron and terbium. terfenol-d has the highest room-temperature magnetostriction of any known material; this property is employed in transducers, wide-band mechanical resonators, and high-precision liquid fuel injectors.

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