Translation of "Thermische alterung" in English

Ageing of the oils by heat is determined by another independent method.

Moreover, the insulation is weakened by thermal and mechanical aging.

In this way, thermal ageing of the second section is effectively avoided.

Thermal ageing of the second, metallic section can largely be avoided thereby.

The thermal ageing of the DOCs therefore plays an important role today.

Thermal aging of unused, unsintered material therefore does not occur.

Ageing of the formulations by heat is carried out in a differential scanning calorimeter (DSC).

The thermal ageing of the formulations is carried out in a pressure differential calorimeter (Pressure Differential Scanning Calorimetry, PDSC).

This leads to a favorable starting performance and at the same time lessens the damage from thermal aging.

Thermal stress, ageing or magnetic influences can also impair the fastening points of components on circuit boards.

In particular Pt/Pd catalysts with a high Pt proportion (6:1) display a good resistance to thermal ageing.

The catalysts corresponding to general formulae (1) to (4) are superior to those tertiary amines already known by virtue of their stabilizing action against thermal and photochemical ageing.

The mixtures of phenols and amines described above were able to reduce or suppress the formation of black sludge, ageing by heat and NOx -initiated oxidation of the oil.

The thermal ageing of the formulation according to Example 7 is determined as described in Examples 9 to 14 using a PDSC cell.

By arranging individual segments for individual reactions at different distances from the engine exhaust manifold, thermal aging of the absorber may be reduced in addition to providing the advantage of especially favorable reaction temperatures in individual absorber segments.

The thermal ageing of the formulations is carried out by pressure difference scanning calorimetry (PDSC).

In the course of the aging of the catalyst with increasing operating time, the efficiency in the front part of the catalytic converter decreases, for example by poisoning and/or thermal aging.

That only allows limited optimization of the conditions in a monolithic honeycomb body in terms of response behavior and resistance to thermal aging.

It is also known through the same literature that the conductivity of such supensions can be substantially improved by thermal aging.

For the purposes of the phenolic resins of the invention, the content of aromatic-rubber segments provides a certain extensibility and therefore flexibilization of the resin, but does not simultaneously bring about disadvantages, in particular in respect of chemical and thermal aging.

As already mentioned, in the process described herein, the catalytic activity of a thermally aged nitrogen oxide storage catalyst which comprises basic strontium or barium compounds on a support material comprising cerium oxide, and additionally comprises strontium and/or barium compounds formed by the thermal aging with the support material—in particular strontium cerate and/or barium cerate—is at least partly restored by treatment with a gas mixture comprising nitrogen dioxide, water vapor and optionally carbon dioxide at 300° C. to 50° C.

This object is achieved by a two-stage process for reactivating a thermally aged nitrogen oxide storage catalyst, wherein the storage catalyst comprises, in addition to platinum as a catalytically active component, basic strontium or barium compounds or strontium and barium compounds on a support material comprising cerium oxide, and additionally comprises strontium and/or barium compounds formed by thermal aging with the support material with inclusion of platinum.

Especially behaviour towards water (water absorption & washout characteristics of formulation constituents) and with respect to elevated temperatures (vaporization of formulation constituents & thermal ageing) gave an insight into ageing stability.

If these are heated to above their recrystallization temperature after the forming step, their strength is reduced (thermal ageing).

Accordingly, it has to be ensured in the production of rotary X-ray anodes that excessive heating does not occur after the forming step in order to minimize thermal ageing of the base body.

Accordingly, it is an object of the present invention to provide a high-temperature-resistant composite body and a process for producing such a high-temperature-resistant composite body, in which a first, non metallic section is joined via a soldered bond to a second metallic section composed of Mo, an Mo-based alloy, W or a W-based alloy, where firstly thermal ageing of the metallic section is largely prevented and secondly the soldered bond withstands high temperatures, high temperature gradients and high mechanical stresses between the two sections.