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1. DE000004444944 - Appts. to measure corrosion resistance

Office Germany
Application Number 4444944
Application Date 16.12.1994
Publication Number 000004444944
Publication Date 27.06.1996
Publication Kind C2
IPC
G01N 5/04
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
5Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
04by removing a component, e.g. by evaporation, and weighing the remainder
G01N 25/2
G01N 31/12
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
31Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroups; Apparatus specially adapted for such methods
12using combustion
G01G 23/48
GPHYSICS
01MEASURING; TESTING
GWEIGHING
23Auxiliary devices for weighing apparatus
48Temperature-compensating arrangements
G01N 17/04
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
17Investigating resistance of materials to the weather, to corrosion or to light
04Corrosion probes
CPC
G01N 17/00
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
17Investigating resistance of materials to the weather, to corrosion, or to light
G01G 19/00
GPHYSICS
01MEASURING; TESTING
GWEIGHING
19Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
G01G 23/48
GPHYSICS
01MEASURING; TESTING
GWEIGHING
23Auxiliary devices for weighing apparatus
48Temperature-compensating arrangements
G01N 5/04
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
5Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
04by removing a component, e.g. by evaporation, and weighing the remainder
Applicants DECHEMA
Inventors SCHUETZE MICHAEL DR ING
BUNDSCHUH KLAUS DIPL ING
Title
(DE) Apparatur zur thermogravimetrischen Charakterisierung der Korrosionsbeständigkeit von Werkstoffen
(EN) Appts. to measure corrosion resistance
Abstract
(DE)
Apparatur zur quantitativen thermogravimetrischen Charakterisierung der Korrosionsbeständigkeit von Werkstoffen in unterschiedlichen Atmosphären bei Temperaturen bis deutlich oberhalb von 1500°C. Durch einen Entlastungsmechanismus ist es möglich, die durch Korrosion hervorgerufene Massenänderung an der Probe von derjenigen am Wägegestänge zu separieren, wobei letztere insbesondere bei sehr hohen Temperaturen in zunehmendem Maße die Wägeergebnisse verfälschen würde. Zusätzlich kann bei geringfügigem Umbau über eine Messung der Kondensation flüchtiger Korrosionsprodukte der Probe im kälteren Bereich an einer Kondensationsplatte mit Hilfe der Mikrowaage die Abdampfrate an der Probe bestimmt werden.

(EN)

Appts. for thermogravimetric characterisation of the corrosion resistance of materials includes a commercial micro balance (21) to record mass change readings at temps. > 1500 deg C. The influence of a reading distortion due to corrosive attack on the sample support and the weighing rod can be eliminated by a two stage weighing. The sample (4) can be lifted off of the interchangeable weighing rod (5) by a lifting mechanism (18), so that on the one hand the rod can be weighed with and on the other hand without the sample. After subtraction of the readings, the actual sample wt. can be recorded.