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SU571143A1 - Method of manufacturing matrix for radioactive sources - Google Patents

Method of manufacturing matrix for radioactive sources Download PDF

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Publication number
SU571143A1
SU571143A1 SU762338420A SU2338420A SU571143A1 SU 571143 A1 SU571143 A1 SU 571143A1 SU 762338420 A SU762338420 A SU 762338420A SU 2338420 A SU2338420 A SU 2338420A SU 571143 A1 SU571143 A1 SU 571143A1
Authority
SU
USSR - Soviet Union
Prior art keywords
matrix
radioactive sources
mixture
zeolite
radioactive
Prior art date
Application number
SU762338420A
Other languages
Russian (ru)
Inventor
И.И. Балаклеец
Е.Д. Борисов
К.С. Монахов
В.П. Сытин
Ф.П. Теплов
Original Assignee
Предприятие П/Я Р-6575
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Filing date
Publication date
Application filed by Предприятие П/Я Р-6575 filed Critical Предприятие П/Я Р-6575
Priority to SU762338420A priority Critical patent/SU571143A1/en
Application granted granted Critical
Publication of SU571143A1 publication Critical patent/SU571143A1/en

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Description

Изобретение относитс  к  дерной технике и может быть применено при изготовлении источников радиоактивного излу- чени , предназначенных дл  использовани  в частности, в медицине. Известен способ изготоЕШени  матрицы дл  радиоактивных источников, по которому в цеолите фиксируют 1-25% нерадиоактивного химического элемента, а затем провод т прессование. Известен также способ изготовлени  матрицы дл  радиоактивных источников, включающий приготовление смеси цеолита с глиной и прессование матрицы с последующим обжигом. Использование в качестве св зующего глины не позвол ет получать тонкие матрицы и матрицы сложной формы, потому что их трудно отделить от пресс-формы без разрушени  матрицы, а после обжига, необходимого дл  спекани  материала, они подвергаютс  большой усадке и короблению . Кроме того матрицы обладают низкой механической тфочностью, что при; ВОДИТ К ИХ ломке при операци х по фикса- ции в них радиоактивных изотопов при изготовлении источников. Цель изобретени  - повышение механич ской прочности матрицы. Это достигаетс  тем, что смесь приготавливают из порошков цеолита и никел  при весовом соотношении 1:2 - 1:10, смесь прессуют при давлении 10ОО1ОООО кг/см и обжигают при 4ОО60О С втечение 0,5-2 ч. Механичегка  прочность матрицы обусловлена тем, что при прессовании смеси из порошков цеолита и никел  образуютс  механическа  св зь между частицами металла, а также частицами металла и частицами ионообменного материала. А при последующем обжиге св зь между ними усиливаетс  за счет спекани . Прочность полученной матрицы позвол ет провоаить механическую обработку дл  доводки ее формы и размеров до требуемой .конфигурации.The invention relates to nuclear technology and can be applied in the manufacture of sources of radioactive radiation, intended for use in particular in medicine. A known method is to manufacture a matrix for radioactive sources, according to which 1-25% of a non-radioactive chemical element is fixed in a zeolite, and then pressing is carried out. There is also known a method for manufacturing a matrix for radioactive sources, which includes preparing a mixture of zeolite with clay and pressing the matrix, followed by calcining. The use of clay as a binder does not allow obtaining thin matrices and matrices of complex shape, because they are difficult to separate from the mold without destroying the matrix, and after firing, which is necessary for sintering the material, they undergo great shrinkage and warping. In addition, the matrix has a low mechanical tfochnost, that when; WATER THROUGH THEIR EMISSIONS during operations for fixing radioactive isotopes in them during the manufacture of sources. The purpose of the invention is to increase the mechanical strength of the matrix. This is achieved by the fact that the mixture is prepared from zeolite and nickel powders at a weight ratio of 1: 2 - 1:10, the mixture is pressed at a pressure of 10OO1OOOO kg / cm and calcined at 4OO60O C for 0.5-2 hours. The mechanical strength of the matrix is due to that when pressing a mixture of zeolite and nickel powders, a mechanical bond is formed between the metal particles, as well as metal particles and particles of the ion exchange material. And during subsequent firing, the bond between them is enhanced by sintering. The strength of the resulting matrix allows for machining to bring its shape and size to the desired configuration.

Обменна  емкость матрицы из порошков цеолита и никел  остаетс  высокой и  вл етс  достаточной Дл  изготовлени  источников радиоактивного излучени  в широком диапазоне активности радионуклида .The exchange capacity of the matrix of zeolite and nickel powders remains high and is sufficient to manufacture radioactive sources in a wide range of radionuclide activity.

При приготовлении источника радиоактивного излучени  на основе стронци  90 и иттри -9О (дл  лечени  онкологических заболеваний глаза) в матрице в виде шаровой чаши с радиусом внутренней сферической поверхности 14,15 мм, внешней сферической поверхности 14 ,35 мм, толщинойО,2 мм, с диаметром основани  чаши 8 - 23 мм активг ность стронци -90 достигла 5 мкКи приWhen preparing a source of radioactive radiation on the basis of strontium 90 and yttrium-9O (for treating oncological diseases of the eye) in the matrix in the form of a ball bowl with a radius of the inner spherical surface of 14.15 mm, the outer spherical surface of 14, 35 mm, thickness O, 2 mm, s The diameter of the base of the bowl is 8–23 mm. The activity of strontium -90 reached 5 µCi at

равномерном распределении нуклида по поверхности.uniform distribution of the nuclide over the surface.

Claims (1)

Формула изобретени Invention Formula Способ изготовлени  матрицы дл  радиоактивных источников, включающий приготовление смеси на основе цеолита и прессование смеси с последующим обжигом , отличающийс  тем, что, с целью повышени  механической прочности матрицы, смесь приготавливаю из порошков цеолита и никел  при весовом соотношении 1:2 - 1:10, прессуют при давлении 1000-10ООО кг/см и обжигают при 4ОО-6ОО°С в течение 0,5-2 ч.A method of manufacturing a matrix for radioactive sources, comprising preparing a mixture based on zeolite and compressing the mixture with subsequent roasting, characterized in that, in order to increase the mechanical strength of the matrix, the mixture is prepared from zeolite and nickel powders at a weight ratio of 1: 2 to 1:10, pressed at a pressure of 1000-10OOO kg / cm and burned at 4OO-6OO ° C for 0.5-2 hours.
SU762338420A 1976-03-24 1976-03-24 Method of manufacturing matrix for radioactive sources SU571143A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU762338420A SU571143A1 (en) 1976-03-24 1976-03-24 Method of manufacturing matrix for radioactive sources

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU762338420A SU571143A1 (en) 1976-03-24 1976-03-24 Method of manufacturing matrix for radioactive sources

Publications (1)

Publication Number Publication Date
SU571143A1 true SU571143A1 (en) 1980-01-25

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SU762338420A SU571143A1 (en) 1976-03-24 1976-03-24 Method of manufacturing matrix for radioactive sources

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SU (1) SU571143A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4560502A (en) * 1981-11-11 1985-12-24 Nukem Gmbh Molded body for embedding radioactive waste and process for its production

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4560502A (en) * 1981-11-11 1985-12-24 Nukem Gmbh Molded body for embedding radioactive waste and process for its production

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